so when in game we see our group member's icon on the left hand side on the top righthand side of the icon there is a green dot what does it do?

second after seeing some of the SS of other ppl i don't see them with the same ui as me how do you change it to that ?

3rd is there any way to zoom out the camera more than the intended range?

are there anyway for us to select other members by like clicking their pictures? instead of clicking them in the field or a hotkey maybe or a hotkey to use a skill on ourselves like for some times u wanna use a buff on ur self and in a group of ppl u end up using it on other or to the wrong person