Are you asking about Dan Thomas' KM FAM macro suite for custom actions? I suspect so since your title says KM FAM... if that's the case the default hotkey to show all the favorite actions you have set up with KM FAM is ⌃F3. But that will show only the ones you have either imported or otherwise saved into KM FAM.
A little more context with your question will make it easier for us to help you.
-Chris