It can be useful for a team to establish specific times when merging is allowed/disallowed. Merge Freeze allows you to add weekly recurring freezes by opening up the “Recurring freezes” panel of a protected branch and selecting the weekdays and times for your recurring freezes.
If you add a recurring freeze and the current time is in the middle of it, then your branch will automatically freeze itself until the end of the recurring freeze.
Recurring freezes can be manually overridden at any time to push out urgent fixes etc.
If a recurring freeze is currently in place and you manually unfreeze it to push out an urgent fix and then refreeze it again, it will automatically unfreeze itself when the recurring freeze period ends.