Hello, im making this post cuz ive noticed its hard to explain to newbie player some stuff about game. the Pet2 AI setting its one of the hardest to explain, mostly cuz they have to open inventary and character info at same time, then grab it to the square and all that.
Besides this the Setting up a selectable target seems to me hard to explain too, ive been playing 1 year now and only get to know about it 1 month ago, cuz its kinda important to know in arena.
So my suggestion would be:

1- Include in Newbies tutorial How to set up a selectable target
2- Tutorial about Pet2 settings (System Menu Help) or
3- Changing the system to the way "Double clicking" the Targets Arrows