There are numerous guided_* tags where one person is controlling another person's body to do something. In most (but not all) of these tags, the body part that is being "guided" is the other person's hand. Creating an encompassing tag will allow very specific actions which rarely ever occur to still be tagged (e.g. hair_tucking in post #5661149 or nipple_tweak in post #169219) without necessarily having to create an extremely esoteric tag.
The existing tags which all fall completely under this tag are guided_breast_grab, guided_crotch_grab, guided_pectoral_grab, guided_handjob, guided_petting, guided_thigh_grab, guided_fingering, guided_masturbation, and guided_nipple_tweak with more than 1000 posts in total.