Whether a Nasi may forgive his honor: Kiddushin 32b
Whether all people must stand before a Nasi, and sit when told to: Moed Katan 27b
At what distance one is supposed to rise for the Nasi: Kiddushin 33b Mourners and Sick People don't stand before a Nasi, but if they stand then the Nasi may not tell them to sit: Moed Katan 27b
No two Leaders may overlap: Moed Katan 28a