I'm currently facing the problem of having a single person assigned to two things at once.
The idea is to have Tiago working on a long task (let's say..2 weeks). During that time, Jorge will need help for a couple of days and during that time Jorge would like to have Tiago join him, while still continuing his task. Keep in mind that in no way I mean Tiago should work more per day than what he would in case he didn't come help Jorge. Tiago's long task is not tight scheduled, so it is perfectly fine to do another task at the same time and still finish his duties on time.
Is there any way to represent this in MS Project, other than having to divide the long task in 2 subtasks, having the second subtask start only after Jorge's task is done?