A314 - Temples, just in front of ears and wrists.
P74 - 10mch each to Throat, back of neck and one to each forearm.
TUTH - one each side of neck.
Yes, I got the TUTH 2x in cologne strength Akuto mainly to wear alongside A314 in clubs but my foot trouble just ain’t letting that happen! 
I still have some in standard strength/neroli for other combos though.
I think the P74 does soften A314 enough to drag the age bar down a bit but it still seems most effective in mid 20s-up. It also moderates the TUTH nicely.
IH/P74 (with or without A314) is a great convo mix but watch out for P74’s tendency to be a bit too best-friendy - Hence the fairly overt none.
The 27 year old was also dressed/styled kind of classier/older than her two mates, which may or may not indicate a preference?