City of Berwyn issued the following announcement on March 28.
Transfer stamps must be scheduled with a minimum of two business days (48 hours) before property transfer, by appointment only AFTER all original documents have been dropped off for review. Appointments will be scheduled once documents have been processed. Appointments are available Tuesdays and Thursdays ONLY, from 11:00am to 3:00pm.
Original source can be found here.
Source: City of Berwyn