Can’t put in more than one reliever an inning in conquest?

Why can’t I put in my reliever in...am I doing something wrong. Don’t even have the option to put in another reliever?

It's a new MLB rule. A pitcher must pitch until he has faced at least three batters or until the inning is over, whichever comes first.

Oh I see thanks.

I do think of your pitcher puts a guy on, then you can relieve him before the 3 batter rule. At least it let me do that.