Currently it's not possible to edit multiple records simultaneously. This should be changed. For instance, we discovered that the system was entering a "false" value in a field which indicated that a constituent was in our service area if no value was entered when the record was created, which means that everyone donating or signing up for events through our DV pages is being flagged as outside the service area, even if they are inside it.
I should be able to call up a set of records (using a robust search interface, which is also needed) which contain addresses inside our service area but which also have a "false" value in the service area field and modify the service area field value to "true" simultaneously.
This is just one of many "power user" tools which must be added to DonorView if it is going to be truly useful and powerful.