When you have a group of students that have come back from the same place, you can sign them all in at once. Simply click/select on the students you would like to sign in and click 'Sign in' like so:
Those students will now appear as in house Their leave record will be saved directly to each of their profiles.
Simply tap/select on the students you would like to sign in. Tap 'Leave' at the bottom of the screen to bring up the Sign In option.
You will then be prompted with a select an action pop up, select Sign In.
The status of the selected students will now read 'In House'