Hi, what matters is how many episodes they are actually part of. If half the episodes, add them as guest stars, if more than that, I suppose season regular is the way to go. From the Contribution Bible:

Preferably, only the series regulars who are in all episodes of a season should be added as season regulars. If a series regular is only in half of a season, they can be added as a guest star instead.

So there is some room for interpretation, but you get the rough idea.

I understand. But only three out of ten episodes have aired so far. So removing is a bit premature. Especially as they already appeared in episodes and are likeley to appear in the reast.

I see. Let's wait and see what one of our TV-experts have to say.

I do not watch the series, but my first question is: are they actually credited on-screen as series regulars in every episode?