Your branches will be displayed to customers, based on your operational hours. Your branch will be listed to choose delivery or pickup, when the time is active and it will be closed to customers when you hide or the time is not defined. Go to Masters--> Operational Hours. Now set your pickup timing in start-time and end-time under Pickup Service section.

You can select multiple pickup timings using add (“+”) button, for a particular day. 

The selected timing can be hidden for service using On/Off button. The service can be deleted for the particular day using delete (-) button.