Can I have a hybrid mode for Antigen Rapid Testing (ART), ie in clinic as well as offsite?

Yes, you can.

You may consider sending participants for testing at our clinics and also have us conduct offsite testing at your event site. Your participants may then have the convenience of either having the test done at a clinic near them, or come 30-60 minutes earlier before the event for testing (for Antigen Rapid Test (ART).