I need help finding a feature, that I think exist but can't seem to locate.

[Selvokaz]

Did you just see the Focus Target I'm action, perhaps?
The default key is Shift+F on keyboard. You can set it to anything you can target.

Perhaps your right, I already use focus target but usually on the enemy and I don't recall it ever being green, so there is a good chance that had i ever used it on a ally i might have seen that. Though a feature as prescribed would be a nice one.