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Contingency duration based on predecessors

Thomas Herbig
Thomas Herbig ✭
edited 12/09/19 inArchived 2016 Posts

I was wondering if it is possible to create a task whose duration is determined by two predecessors, onefrom backward planningand onefrom forward constraints. I would like to use this, among others, to showdynamic contingency periodsin my project.

Let's take the simplest example, a project with the following three lines:

1. Milestone 1 at the start of the project, say, 8/29/16.

2. Milestone 2 at the required completion date of the project, say, 9/30/16.

3. A task, "Contingency," with a non-zero duration. The end date of this task should be determined backwards by the predecessor on Line 2, while the start of the task should be determined forward by the predecessor on Line 1.

That's not what I want. Is there a way of getting this done?

Thanks

Test for contingency 1.png

Test for contingency 2.png

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  • Kennedy Stomps
    Kennedy Stomps Employee

    Hi Thomas-- We don't currently support constraints in Smartsheet, so as far as I'm aware, this wouldn't currently be possible. This is definitely something our team can consider implementing in a future release and I'll pass along your input!

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  • Thomas Herbig
    Thomas Herbig ✭

    Thank you. Yes, this would be important; other project planning tools have it and I like it.

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  • Antoine Falempin
    Antoine Falempin ✭

    A workaround for the dynamic duration of the item task.

    As we cannot out of the box get a dynamic calculation out of the dependencies.

    Workaround : --> create two child items (0 duration milestone) : ==> the parent will get the duration between the milestones.

    Master task

    - one item with the start dependency

    - one item with the stop dependency

    ==> duration is then automatically calculated.

    deploymentTimelines.PNG

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Awesome! I'm glad it's working for you. 👍️<\/span><\/p>"}]}},"status":{"statusID":3,"name":"Accepted","state":"closed","recordType":"discussion","recordSubType":"question"},"bookmarked":false,"unread":false,"category":{"categoryID":322,"name":"Formulas and Functions","url":"https:\/\/community.smartsheet.com\/categories\/formulas-and-functions","allowedDiscussionTypes":[]},"reactions":[{"tagID":3,"urlcode":"Promote","name":"Promote","class":"Positive","hasReacted":false,"reactionValue":5,"count":0},{"tagID":5,"urlcode":"Insightful","name":"Insightful","class":"Positive","hasReacted":false,"reactionValue":1,"count":0},{"tagID":11,"urlcode":"Up","name":"Vote Up","class":"Positive","hasReacted":false,"reactionValue":1,"count":0},{"tagID":13,"urlcode":"Awesome","name":"Awesome","class":"Positive","hasReacted":false,"reactionValue":1,"count":0}],"tags":[]},{"discussionID":107147,"type":"question","name":"Using IFERROR Formula - Still getting UNPARSEABLE error","excerpt":"I'm calculating a Burn Rate Percentage so it's using a basic calculation FORMULA =[Column4]@row \/ [Column2]@row --> This works fine However when one of the Column is a ZERO, I get a #DIVDE BY ZERRO error displayed. To address this error, I used an IFERROR but it's giving me an \"UNPARSEABLE\" error. I want the cell to…","snippet":"I'm calculating a Burn Rate Percentage so it's using a basic calculation FORMULA =[Column4]@row \/ [Column2]@row --> This works fine However when one of the Column is a ZERO, I get…","categoryID":343,"dateInserted":"2023-06-30T16:32:54+00:00","dateUpdated":"2023-06-30T16:35:50+00:00","dateLastComment":"2023-06-30T18:58:03+00:00","insertUserID":161931,"insertUser":{"userID":161931,"name":"Christine Cao","title":"Engagement Manager","url":"https:\/\/community.smartsheet.com\/profile\/Christine%20Cao","photoUrl":"https:\/\/us.v-cdn.net\/6031209\/uploads\/defaultavatar\/nWRMFRX6I99I6.jpg","dateLastActive":"2023-06-30T18:54:01+00:00","banned":0,"punished":0,"private":false,"label":"✭"},"updateUserID":91566,"lastUserID":45516,"lastUser":{"userID":45516,"name":"Paul Newcome","title":"","url":"https:\/\/community.smartsheet.com\/profile\/Paul%20Newcome","photoUrl":"https:\/\/us.v-cdn.net\/6031209\/uploads\/userpics\/082\/nQPUTVFKKWDJ2.jpg","dateLastActive":"2023-06-30T18:56:25+00:00","banned":0,"punished":0,"private":false,"label":"✭✭✭✭✭✭"},"pinned":false,"pinLocation":null,"closed":false,"sink":false,"countComments":3,"countViews":17,"score":null,"hot":3376296057,"url":"https:\/\/community.smartsheet.com\/discussion\/107147\/using-iferror-formula-still-getting-unparseable-error","canonicalUrl":"https:\/\/community.smartsheet.com\/discussion\/107147\/using-iferror-formula-still-getting-unparseable-error","format":"Rich","lastPost":{"discussionID":107147,"commentID":383396,"name":"Re: Using IFERROR Formula - Still getting UNPARSEABLE error","url":"https:\/\/community.smartsheet.com\/discussion\/comment\/383396#Comment_383396","dateInserted":"2023-06-30T18:58:03+00:00","insertUserID":45516,"insertUser":{"userID":45516,"name":"Paul Newcome","title":"","url":"https:\/\/community.smartsheet.com\/profile\/Paul%20Newcome","photoUrl":"https:\/\/us.v-cdn.net\/6031209\/uploads\/userpics\/082\/nQPUTVFKKWDJ2.jpg","dateLastActive":"2023-06-30T18:56:25+00:00","banned":0,"punished":0,"private":false,"label":"✭✭✭✭✭✭"}},"breadcrumbs":[{"name":"Home","url":"https:\/\/community.smartsheet.com\/"},{"name":"Using Smartsheet","url":"https:\/\/community.smartsheet.com\/categories\/using-smartsheet"},{"name":"Add Ons and Integrations","url":"https:\/\/community.smartsheet.com\/categories\/apps-and-integrations"}],"groupID":null,"statusID":3,"attributes":{"question":{"status":"accepted","dateAccepted":"2023-06-30T18:53:59+00:00","dateAnswered":"2023-06-30T18:25:40+00:00","acceptedAnswers":[{"commentID":383387,"body":"

You need to remove the closing parenthesis from before the comma.<\/p>"}]}},"status":{"statusID":3,"name":"Accepted","state":"closed","recordType":"discussion","recordSubType":"question"},"bookmarked":false,"unread":false,"category":{"categoryID":343,"name":"Add Ons and Integrations","url":"https:\/\/community.smartsheet.com\/categories\/apps-and-integrations","allowedDiscussionTypes":[]},"reactions":[{"tagID":3,"urlcode":"Promote","name":"Promote","class":"Positive","hasReacted":false,"reactionValue":5,"count":0},{"tagID":5,"urlcode":"Insightful","name":"Insightful","class":"Positive","hasReacted":false,"reactionValue":1,"count":0},{"tagID":11,"urlcode":"Up","name":"Vote Up","class":"Positive","hasReacted":false,"reactionValue":1,"count":0},{"tagID":13,"urlcode":"Awesome","name":"Awesome","class":"Positive","hasReacted":false,"reactionValue":1,"count":0}],"tags":[]},{"discussionID":107143,"type":"question","name":"How can I get (on a separate metric sheet) the average SLA time within a given month?","excerpt":"I am trying to create a metric sheet to document how long response and acknowledgement times are taking per month for record keeping. I have a sheet that has an acknowledgement SLA column and a \"date of request\" (auto column for when the submission was created), and I'm looking to record the average for each month on a…","snippet":"I am trying to create a metric sheet to document how long response and acknowledgement times are taking per month for record keeping. I have a sheet that has an acknowledgement…","categoryID":322,"dateInserted":"2023-06-30T15:31:46+00:00","dateUpdated":null,"dateLastComment":"2023-06-30T17:30:08+00:00","insertUserID":159225,"insertUser":{"userID":159225,"name":"laney_white","url":"https:\/\/community.smartsheet.com\/profile\/laney_white","photoUrl":"https:\/\/aws.smartsheet.com\/storageProxy\/image\/images\/u!1!5FvXObtmaHw!CVFXQvc68Xo!anynrNoWe-v","dateLastActive":"2023-06-30T17:19:19+00:00","banned":0,"punished":0,"private":false,"label":"✭✭"},"updateUserID":null,"lastUserID":161714,"lastUser":{"userID":161714,"name":"Carson Penticuff","url":"https:\/\/community.smartsheet.com\/profile\/Carson%20Penticuff","photoUrl":"https:\/\/us.v-cdn.net\/6031209\/uploads\/userpics\/B0Q390EZX8XK\/nBGT0U1689CN6.jpg","dateLastActive":"2023-06-30T19:17:25+00:00","banned":0,"punished":0,"private":false,"label":"✭✭✭✭✭"},"pinned":false,"pinLocation":null,"closed":false,"sink":false,"countComments":3,"countViews":21,"score":null,"hot":3376287114,"url":"https:\/\/community.smartsheet.com\/discussion\/107143\/how-can-i-get-on-a-separate-metric-sheet-the-average-sla-time-within-a-given-month","canonicalUrl":"https:\/\/community.smartsheet.com\/discussion\/107143\/how-can-i-get-on-a-separate-metric-sheet-the-average-sla-time-within-a-given-month","format":"Rich","tagIDs":[254],"lastPost":{"discussionID":107143,"commentID":383369,"name":"Re: How can I get (on a separate metric sheet) the average SLA time within a given month?","url":"https:\/\/community.smartsheet.com\/discussion\/comment\/383369#Comment_383369","dateInserted":"2023-06-30T17:30:08+00:00","insertUserID":161714,"insertUser":{"userID":161714,"name":"Carson Penticuff","url":"https:\/\/community.smartsheet.com\/profile\/Carson%20Penticuff","photoUrl":"https:\/\/us.v-cdn.net\/6031209\/uploads\/userpics\/B0Q390EZX8XK\/nBGT0U1689CN6.jpg","dateLastActive":"2023-06-30T19:17:25+00:00","banned":0,"punished":0,"private":false,"label":"✭✭✭✭✭"}},"breadcrumbs":[{"name":"Home","url":"https:\/\/community.smartsheet.com\/"},{"name":"Formulas and Functions","url":"https:\/\/community.smartsheet.com\/categories\/formulas-and-functions"}],"groupID":null,"statusID":3,"image":{"url":"https:\/\/us.v-cdn.net\/6031209\/uploads\/ZXS917R2FJKC\/master-sheet-png.png","urlSrcSet":{"10":"","300":"","800":"","1200":"","1600":""},"alt":"master sheet.PNG"},"attributes":{"question":{"status":"accepted","dateAccepted":"2023-06-30T17:19:35+00:00","dateAnswered":"2023-06-30T15:50:27+00:00","acceptedAnswers":[{"commentID":383345,"body":"

If I understand correctly, this may help.<\/p>

=AVERAGEIF({date of request}, MONTH(@cell) = 2, {Ack SLA})<\/p>"}]}},"status":{"statusID":3,"name":"Accepted","state":"closed","recordType":"discussion","recordSubType":"question"},"bookmarked":false,"unread":false,"category":{"categoryID":322,"name":"Formulas and Functions","url":"https:\/\/community.smartsheet.com\/categories\/formulas-and-functions","allowedDiscussionTypes":[]},"reactions":[{"tagID":3,"urlcode":"Promote","name":"Promote","class":"Positive","hasReacted":false,"reactionValue":5,"count":0},{"tagID":5,"urlcode":"Insightful","name":"Insightful","class":"Positive","hasReacted":false,"reactionValue":1,"count":0},{"tagID":11,"urlcode":"Up","name":"Vote Up","class":"Positive","hasReacted":false,"reactionValue":1,"count":0},{"tagID":13,"urlcode":"Awesome","name":"Awesome","class":"Positive","hasReacted":false,"reactionValue":1,"count":0}],"tags":[{"tagID":254,"urlcode":"Formulas","name":"Formulas"}]}],"initialPaging":{"nextURL":"https:\/\/community.smartsheet.com\/api\/v2\/discussions?page=2&includeChildCategories=1&type%5B0%5D=Question&excludeHiddenCategories=1&siteSectionID=0&sort=-hot&limit=3&expand%5B0%5D=all&expand%5B1%5D=-body&expand%5B2%5D=insertUser&expand%5B3%5D=lastUser&status=accepted","prevURL":null,"currentPage":1,"total":10000,"limit":3},"title":"Trending Posts","subtitle":null,"description":null,"noCheckboxes":true,"containerOptions":[],"discussionOptions":[]}">

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