timecard entry problem

Hi,

There're several problems in Timecard:
1) How to restrict employees to enter timecard no more than 8H for regular work time in a day, and overtime is no limit?
2) How to restrict user to create and edit after 5 days of period end date? for example, my timecard period is from 7/1/2024 to 7/7/2024, and I can't edit the timecard from start 7/13/2024.
3) How project manager can review the teams’ timecard in one place?

Thanks