quotas

I have configured quotas based on seniorities in set base entitlements.

0-5 years 80 hrs

5-10 years 160 hrs

Now i was thinking when we go live, we will define the actual hire dates in 0041. How will the seniorities picked from 0041 and quotas be generated? Where do i have put that seniorities are based on it 0041.

Please suggest.