setup your main with two macros

#ASSIST#
#FOLLOW#
btw these macros serve no purpose other than letting u know what they are doing to the other account

place them on " - " " = " in your action bar (far right)

your alt(follower)
make macros

/assist <name>
/follow <name>

place them on the same corresponding spot

this is the basic assist/follow macros you will need
from this point you can get them to do whatever u want with slight modifications to the macro or macros.