If you want to use Rockwool then you are correct. You soak it for 24 hours in distilled Ph water at 5.2 -5.5. After it soaks you take your cutting and dip the whole thing in Anti-wilt, then you dip it in the rooting hormone. After that you place it in the Rockwool and gently push it in.

There is an FAQ that shows taking cuttings and rooting in an aero cloner but cutting, soaking and dipping is the same.

They root best under cool white fluorescents 24 hours a day. With anit-wilt you do not need to use a humidity dome. The Anti-Wilt will keep them from drying out and give them a better chance to make it until they can root. You can use a humidity dome in place of Anti-wilt but you may not have as good of results as if you did.

Jiffy peat moss pellets are very easy to use too.

Keep the Rockwool moist and use Ph adjusted 5.5 distilled water.