I have three systems, let's call them A, B, and C. When I cluster A + C, I would like to prevent users from being able to select either System A and System C as standalone system requests. Both standalone Systems A and C should be marked as unavailable from the drop-down menu until the project finish date is in the past for the row in the Smartsheet which has System A + C selected.
Is there a workflow or formula that I can use?