Everyone's system is different hun. I would be co-conscience, aware of my other parts. We are also in co-operation which means we discuss, vote, debate, collaborate on things for the betterment of the system, at least most of us do. We are family, and like all families, you have your black sheeps, rivalries, jealousies, etc.
We are aware of our switches on a conscious level, and most of them are seamless, but if there is a huge contrast in personality types, it feels more like possession.
I've been looping on this one, when I say "I", who is "I"? I become someone different, the head voice changes, the walk, talk, motion, gesturing, everything, then there is a new "I". If I weren't aware, this would be no problem.
I feel like we just bounce along life doing whatever without any real direction or goal acting and reacting because we've never been any good at goal setting, things are always changing. Every alter has a job, so for each job encountered, the alters whose specialty is for that job steps up front. A job can be like dealing with people, mechanizing, parenting, relaxing, cooking, etc. Sometimes I feel like a Rolodex and someone gave it one big spin.
I can't say I get missing time, I just can't remember what happened moments to hours ago, let alone yesterday or last week. My days are segmented with holes in it. Memories stay with the alter that experiences them. Memories are like dreamlike snapshots, just a few tiles floating around against a black background giving me the feeling of a no past. We do have memory sharing, especially for the pertinent stuff like medical, enuff to appear "singular" somewhat, only if they wanna, but it takes awhile. I appear "slow" at times.
We can all be working in direction, then another part might pop out and decide that it wants to go this way instead. We just deal with it and move on. We have a general idea of what another might of done, but the details are not there.
I hope this helps. You can't imagine, you're so lucky. I can either embrace it, or feel sorry for myself. I embrace it. If anything, it has made me a multi talented person, an expert in most things. My problem solving skills are exponential because I have an entire team committed to solving each problem!