How do I add and removing fields to filters in list view

I'm trying to figure out how to add field choices to the filter drop down choice to create better filters for my team

the documentation is lacking in simple instructions

Does anyone have the simple steps on how to do so?

nothing in these 2 instructions that support sent me

https://support.sugarcrm.com/Documentation/Sugar_Versions/11.0/Ent/Application_Guide/User_Interface/#List_View
https://support.sugarcrm.com/Documentation/Sugar_Developer/Sugar_Developer_Guide_11.0/Architecture/Filters/

Related article: https://sugarclub.sugarcrm.com/explore/w/tip-of-the-week/542/filtering-and-saving-searches-in-the-sugar-list-view

thanks