will

I've recently assumed ownership of a G3 and don't know much about vectors.
There is an existing vector defined as:
01 wait-time 0 secs hearing silence
02 collect 1 digits after announcment xyz
03 route-to number [hunt-group 1] with cov y if digit = 1
04 route-to number [hunt-group 2] with cov y if digit = 2


I need to add vm if calls aren't answered in a certain amount of time. From digging through the manuals and help file it looks like I need to add these lines:
05 wait-time 60 sec hearing music
06 messaging split 99 for extension xyz (assign vm to ext xyz)

But how would I distinguish between the 2 hunt-groups with a separate vm for each?

thanks,
Will