Sorry if this comes across as negative OP, but you say you are new to healing...

well my advice to you is to not macro these things together, it may seem to make things a bit easier now, but in the long run you are better just building the muscle memory using these abilities separately.
Sure divine seal and med2 go nicely together, and a lot of the time you will use them together, but there also times that you might need to save that DS and an unbuffed med2 will do.

Outside of a very narrow handful of macros, most do not work particularly well in this game