Sorry I think some info is missing as to what your referring to. I will try to respond based on what I think your referring to.
If your not seeing media items on the live assist media wipe page you have to enter their media number into the shot box to assign them to a button.
First you load the media items via media manager. Once loaded for the first time they will be assigned an ID. Use that number to map it to a shot box button.
#Carbonite