Screen Personas - Drop down menu option

Hello everyone,

I have a query regarding the menu option that is displayed by default in a flavor that we create (beside the field to launch tcodes).

Question 1) Is there a way to do some changes to this list? by that I mean, change the color, add or remove or disable functions, etc.

Question 2) Is there a way to create a button with similar drop down option menu?

Thanks,

Mahip Singh Saluja.