How to deal with overtimes on activitys

Hi,

Currently we are using 7hours days format.

Let's imagine we have a 3 days of activity on the planning on 3 differents projects :
- The first day of the activity : The responsible work 10hours instead of his 7 assigned

If there is a planning recaculation, then the 2 days left on the activity will be shifted forward of 3hours so the activity wiil bon 4 days instead of 3.

We wanted to know if there was a way for the activity no to be longer than the 3 days initially planned ?


Thank you in advance,
Regards