First I put them on a seperate action bar (you can get more bars by going esc>interface>action bars). I then go into the keybinds (just hit esc and it is an option there) and find the action bar and the first 5 buttons on the bar I assigned cntrl+shift+1 and did that for all 5 but increasing the number which each (you can do any bind you like, I never use cntrl+shift together and the game has no short cuts that use it so it worked fine for me).
After that just throw the motifs on it.
No for the G15 part.
Open up the Logitech G-Series Key Profiler. Find a button you want to use for the hotkey. After that, click on it and go to Assign Macro> Create new one
Once in there make sure the 2 boxes on the right are not checked. Now start recording, hold down cntrl+shift (or whatever you assigned in Rift for the action bars) then hit 1 and let go, hit 2 and let go do that all to 5. At the end after letting go of 5 let go of cntrl+shift.
Now, need to add time delays inbetween the key strokes. On the number with the arrow pointing up, right click on it and select Insert Delay. Double click on the number and enter in 1000, that comes out to 1 second.
Do that for all the numbers with arrows pointing up.
Reason for the delay is cause the game has a global cooldown on anything performed so even though something is instant cast you still need to wait a second before you can use another ability.
That's how I have it and it works great. I have 2 different marcos for the motifs. One with all the motifs that I use in anytype of group environment or I need to take on a lot of mobs or elites, the second is just the heal, the +to healing, and - damage taken one that I use for most usual run of the mill things when I need it. I only have the second one cause I rather not wait the extra 2 seconds to have 2 more motifs casted on myself that I really dont need for whatever reason.