Some great advice given here

Eos - I use rarely, if ever. However, yep, she will blow her abilities as soon as the come off cooldown. This can be troublesome especially with when extra adds appear. If she uses whispering dawn before or during their appearance, Eos will take hate and make the tanks life a little more difficult.

Generally speaking:
Eos - I manually control all abilities and have them on a comfortable position on my hotbar
Selene - Depending what i'm doing, i tend to leave her on Sic and trust her to heal who needs it. Using rouse after/just before high party damage can mean you can focus on the tanks and let your fairy heal up party members (with your emergency heals thrown out as needed).

Macros - I don't really have any. I'm currently in a tug of war whether to macro together embrace + physics, embrace + lustrate, embrace + adlo. I'm kinda thinking against it, because i like my fairy to have the freedom to heal others when i'm focusing on one or two people for massive damage.

**addition** only reason for me thinking of macroing these abilities up is for extra healing focused on tanks. Scholar can feel a little behind in heal strength just spamming adlo and physic lol.