hi

i do not usually watch streamers but today i watched biceptimus for a while and i realized that he somehow have his pets showed separately on the screen. sorry for my bad english :D so this is what i mean i made a screenshot:

so as you can see we can see his pets UI different as the default one. my question is that how the heck can we do this? could not find any option to that. can someone guide me please? :) much appreciated.

thank you :) and is that save itself? or i have to right click everytime i log in?