Officiating [verb]

I have just been at our Church where we have had five clergymen to officiate: two in shovel-hats.

They said that could not be, as the people were expecting me to officiate.

"Only fainted," the gentleman who had been proposing to officiate as Milly's stepfather said.

Great was the surprise when the victor appeared (p. 127) to officiate as page.

When you have found this woman, if she has no lover, you will be expected to officiate in that capacity.

Then the men came in, and she was obliged to come forward and officiate at the tea-table.

Stand up, mistress, and tell me who is to officiate at this fast.

Riddell had to officiate at yet one more investigation that eventful day.

Were these words the ramblings of one who had been used to officiate as a Church minister?

They officiate as priest at marriage and funeral ceremonies.