Elder vampires within the Ebony Kingdom are considered Kholo, which means that they are allowed to advise the Magaji in a similar manner to the primogen's relationship with a Prince in western society. Every Legacy can allocate elders to the Kholo.
The institution of Kholo is separate to the title of Magaji and this allows the elders of a domain much freedom and influence within a domain where they are eldest. When they move to another domain where elder vampires reside, they lose their status as Kholo.