Description

When more than 3 or 4 registers are added, the select menu overflows off the screen, and the remaining options become invisible. There's no way to scroll, which makes it hard for users to select later registers.

What needs to be fixed?

Wrap the register select menu in a scrollable container.
Apply a max height and enable vertical scrolling.
Ensure this works smoothly on all screen sizes, especially mobile.
Apply the same fix to both Schedule and Edit Schedule screens.