The Procare Web App for check-in was intended for curbside parent drop off. It sounds like you are doing more of a batch check-in
or bus run
where an employee is checking the children in. These functions are supported on the regular Procare application.
Currently there are no batch processes supported on the Web App. These might be very difficult to do on a phone screen. Requests for changes/additions/features are best handled by the Suggestions page