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Joey_Cho's avatar
Joey_Cho
Copper Contributor
Jan 12, 2023
Solved

How to have linked two tasks finish and start on same day.

Hi, I am trying to have linked two tasks finish and start on same day. 

 

For example,

 

Task A 12/01/2023 - 13/01/2023 

Task B 13/01/2023 - 14/01/2023

 

I want to keep the relation as F-S.

 

Any advice will be much appreciated.

 

Thanks.

  • Joey_Cho

    Here are a couple of options. In this example a custom Project calendar was created based on the Standard calendar except Saturday and Sunday are normal working days. For the first two tasks, a Task Calendar was selected using the built-in 24 hour calendar. Keep in mind that Project only allows one definition for a "day" so with a default 8 hour workday, "task a" completes at midnight but "task b" then starts immediately on the same day (i.e. 1/13/23). For the second two tasks with the 7d workweek, "task d" will start on 1/13/23 as long as "task c" finishes before end of shift on 1/13/23.

    You could also extend the work hours of the 7 day calendar (e.g. 9 hour workday) such that an 8 hour task will finish at 5:00 PM and a successor task will than start at 5:00 PM since there is still one hour left in the workday.

     

    Lot's of options, it all depends on what you are trying to do.

    Hope this helps.

    John

7 Replies

  • John-project's avatar
    John-project
    Silver Contributor

    Joey_Cho

    Here are a couple of options. In this example a custom Project calendar was created based on the Standard calendar except Saturday and Sunday are normal working days. For the first two tasks, a Task Calendar was selected using the built-in 24 hour calendar. Keep in mind that Project only allows one definition for a "day" so with a default 8 hour workday, "task a" completes at midnight but "task b" then starts immediately on the same day (i.e. 1/13/23). For the second two tasks with the 7d workweek, "task d" will start on 1/13/23 as long as "task c" finishes before end of shift on 1/13/23.

    You could also extend the work hours of the 7 day calendar (e.g. 9 hour workday) such that an 8 hour task will finish at 5:00 PM and a successor task will than start at 5:00 PM since there is still one hour left in the workday.

     

    Lot's of options, it all depends on what you are trying to do.

    Hope this helps.

    John

  • PlannersPlace's avatar
    PlannersPlace
    Copper Contributor

    Joey_Cho 

     

    Do you mean you want them to

    1. have same start and same finish dates OR
    2. have start & finish date on same date

    Though it's not good practice, only way I know to use FS  and have same start date is to use Negative Lag. Assuming ID of Task A is 5, in the predecessor column, enter 5FS-2 (where is the duration of Task A).

    • Ignacio_Martin's avatar
      Ignacio_Martin
      Steel Contributor
      Hello Joey.

      If you are willing to sacrifice a minute, and show the date without the time, you can put a negative lag of 1 minute in the link (FS-1min).
      • Joey_Cho's avatar
        Joey_Cho
        Copper Contributor
        Hi Ignacio. Thank you for the advice,
        How to put a negative lag in the link???

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