Makes some introductions, informally

MCS

Think of the person who often starts an event by welcoming everyone—shortened to just their initials.

Makes some introductions, informally" hints at a casual way to say someone is hosting or presenting others. The answer "MCS" plays on "MCs," short for "masters of ceremonies," who literally make introductions at events. The plural "some" in the clue suggests the answer is also plural, fitting "MCS" as a shorthand variation. It’s a straightforward abbreviation with a slight twist on the spelling.