i've not used bongos myself but if its like bartender at all you can also use modifiers like:

ctrl #
shift#
alt#
ctrl + shift#
ctrl + alt#
shift+alt#
ctrl + shift + alt#

allowing multiple options when it comes to spells or macros.

a common 1 is alt for main spells used on your slave and ctrl as movement ect with shift as secondary spells ect. try things out, explore each option and find the way that suits you best!