Substitution during vacation

[Yaroslav Shitov]

There is a task that must be performed by an employee from a pool of employees. One employee must be allocated to the task for its entire duration and must not change throughout the task's execution period. This excludes periods when the employee might be on vacation. In that case, someone else from the employee pool must be assigned to the task as a replacement.

Please advise on how to accomplish this.

Currently, I assign an employee to a task like this:

resource doers "staff" { resource doer1 "doer 1" resource doer2 "doer 2" } task do_this "to do" { effort 60h allocate doer1 { alternative doer2 persistent } }

And if the allocated employee goes on vacation during the task execution period, the work will be suspended for the duration of the vacation.