Having Campaign feature in Custom UI.

Ok, I thought i saw another thread about this but since I can't find it I'll ask here: how exactly do you put the campaign feature in a custom ui? I know its already in the tag files but I guess isn't referenced in one of the main collection files. Help will be appreciated. Thank you.

Open main_menu_select_list.ui_widget_blahblah that's in your ui\shell\main_menu folder, scroll down to the bottom. Under child widgets, make sure that main_menu_select_list_load_camp or something along those lines is selected, and hit duplicate. :)