Restrict DATETIME view

[Sven_Meissner]

I am developing an app in which vehicles can be rented. For this I would like a restriction in the selection of days and times (only from Monday to Friday from 08:00 to 17:00 and Saturday from 08:00 to 12:00, no Sundays, no public holidays) The DATETIME selection should not be any other Show selection. Is it possible to maipulate the view in such a way that the (locked time) is not available? The display should also show the minutes reduced to 15, i.e. 10/24/2023 1:30 p.m. or 10/25/2023 10:15 a.m. I have two columns with Request-From Request-To. I am very grateful for every approach.

[Marc_Dillon]

It's not possible to modify the appearance of the date-time picker, because those are handled by the actual device/OS being used, not by Appsheet. The only thing you could do here is write an appropriate valid_if expression.