Getting players in
On Players, tap Invite players. Copy the link with Share link, or give out the six-digit join code. Players download the app, sign up with the code and appear on your list. Regenerate the code if it gets out; the old link stops working with it.
To add someone yourself, use Add manually. Give an email and they're sent instructions to sign up with that address; their account links to the record you created.
Before they can be scheduled
Players who have joined but have no squad or grade sit in Outstanding above the list. Tap Set to give them a squad, grade and role. To do several at once, select them and use Set grades and roles.
Grades are never shown in the player app.
When someone leaves
Archive keeps their record and history but takes them out of every session. It's in the row's menu, or select several and archive together.
Delete removes them completely: contact and guardian details are purged, and their grades and attendance go with them. Past schedules keep the slot but no longer show a name. It can't be undone, so the dialog offers Archive instead. Use Delete when a player asks for their record to be removed.