add funtion

[prakmao]

The calendar should have more modifications, for example, Sundays should be automatically red, things can also be customized.

[WillowMobileSys]

AppSheet has a "Feature Ideas" section where you can list your specific needs.  Others vote on them and if there is enough interest then AppSheet may include that item as a future feature - at least in theory that is how this is supposed to work.

Be sure to search the "Feature ideas" to see if there might already be items listed similar to your need and if so - vote them up!!