for some people the core (host) is the leader that moves everyone towards sharing with everyone else.

for others it is the alters that are in the leadership position in the system that gets everyone sharing and working together as a team.

it all depends on what type of system of alters and host(core) you have and how much co consciousness you have in the system and host (core).

I making a guess here that you are trying to come up with how everything "should" and "has to" be for how things work by comparing how DID affects everyone else to you.

I know I keep saying this but its how DID works -

everyone has their own ways in which DID has affected them. Though there is diagnostic criteria that everyone with DID meets, everyone with DID is different. there is no one set way DID works.

it affects one person this way and that person another way and another person another way and .....

how ever DID is affecting you is how it works.