Predecessor of one OR another task

moliva

Hi there, i would like to start an activity 10 days before either activity A OR activity B starts. How should i define the predecessor? BR Marco

L_123

its based off of row numbers. So if A was on row 1 and B was on row 2 you would put

1-10,2-10

exactly like that inside of the predecessors column

Alejandra

Hi Marco,

You can have the same predecessor for more than one task, however there currently isn't a way to define an OR criteria. Please feel free to submit a Product Enhancement Request to let our Product team know that you'd like to have this functionality in Smartsheet. 

To represent a period of inactivity or overlap between the predecessor and dependent, you can use lag time. More information on this can be found here: https://help.smartsheet.com/articles/765727-enabling-dependencies-using-predecessors 

moliva

Hi L@123  and Alejandra

Thank you for your answers. I think I didn't express myself properly - excuse my French

In other words… “Activity C” should start 10 Days before Activity (A or , depending on which Activity starts FIRST! Example “Activity A” starts on May 1, 2019, “Activity B” starts on June 1, 2019. So “Activity C” is scheduled to start on April 20. Maybe you have an idea how to solve this problem. Thanks a lot in advance! Marco