How to remind parents who don’t have Solitaire?

There is a reminder function when editing the punch-in content, just turn it on.

When publishing a check-in solitaire in Solitaire Butler, you can enable check-in by list, which makes it easy to find which student checked in. Scroll to the bottom to set the time reminder check-in function. In the check-in completion status on the Solitaire page, you can click to notify the unopened person.

Solitaire, as the name suggests, is to connect things of different genres or types up and down in a continuous way, and can extend downwards without limit like a long dragon. It is like an infinite stage where every participant is the protagonist.