In my parish, and I guess in a few others in my Diocese, we use what is called a ‘Commentator’. This person announces who is the Celebrant for the Mass, if there is any one special (guest priest, Baptismal Family, yadda) as the Mass opens. We also say who is proclaiming The Word.
In some instances, we do the “Stand up”, “Sit down”, “Kneel” that is helpful when you have non-Catholic visitors.
Before you take my head off: this was no my idea, but I do happen to like it. I have attended other churches where they do not have this person, but they do it with big screens or some other non-personal method.
Anyway, at our church, the Commentator stands at the Ambo.
Here is where it gets ugly: In the past, the Commentator would stand at the Ambo for the entire duration of the Mass. As the Worship Chair, I looked it up and learned that was a no-no, and asked that the Commentator SIT during the Liturgy of the Word - and just go back when it’s time to read off the Communion Antiphon (we don’t sing this… another “don’t take my head off, please”). Receive Communion, and then return after the closing prayer. We have a number of people who don’t get this, and I’m trying to pull coat tails and say, STOP IT!

One problem is I’m no longer the Chair of the Worship Commission, and these are habits from long ago.
Now what?
(See, this is why I get upset when people start down these side roads, because they tend to be slippery slopes)