I think, if I am understanding the question correctly, that whoever is rooming the patient can hit Ctrl-S to save the encounter to their inbox. Then room a second patient, Hit Ctrl-S again, to save the second encounter to their inbox. They can then reopen the first encounter from their inbox, edit it, and forward it to the provider. Not sure if this works for the "check in" button but it should if the "most recent encounter" tab is opened.
