To add a membership with limited access times, go to your System Settings, then to the Memberships tab. Select any existing membership or choose to create a new one.
Under the section "Membership Scope", you can add limited access times, as desired.
If you select 'limited access', the days of the week will appear. Click on the plus sign to enter the limited access times.
In the example above, the membership only allows clients to enter between 9.00 in the morning and 19:00 in the evening on Mondays, Tuesday, Fridays, and Saturdays.