What if a team (team area) need to work in several timelines at the same time?

hi everyone, I ve been reviewing the forum but I ve not found a clear answer to my question.

It seems that a team area belongs to only one timeline right?, so what is the best way to implement the case of a team who should work in several timelines?

I mean, suppose that we have several timelines in the same Project Area

Now we have found that it would be good having a team (lets say QA) who will work across all the timelines.

I wonder how that should be implemented in RTC

Option 1. One specific team area per timeline containing the same people (For Example QA-tl1, QA-tl2 ...)

Option 2. One team area an assign it to all the timelines (if such a thing is possible I am not sure)

Option 3. Any suggestion?

Regards