There is a tickbox in the Wizard on the last page to enable the other combinations. If you don't tick the box, the Quick Setup Wizard, does create the mapped keys for the other combinations of MODIFIERS + 1 through =, but it doesn't assign the Hotkeys to them. You can just assign the hotkeys youself by selecting the correct mapped key under ISB42 - Combat Broadcast Hotkeys.
If you mean other key combos, e.g. A through Z, then you can use the Mapped Key Wizard for this (under the Wizards menu). For a basic broadcasting type (or Assist plus Broadcast), you can pump in as many keys as you like into the box on the wizard and it will create them all at once. Some other types of mapped keys you need to create 1 at a time e.g. a Re-Map, because of the nature of them.