Thank you both for your helpful responses.
I got a "bright idea" and sent an email to the lady who is organizing things and I should be hearing from her soon.
I read that it could be just a Confirmation service or one within a Mass .... the information that it could be either a High or Low Mass is helpful.
So, now it's just a matter of getting a reply, and my need to know the details will be satisfied!
God Bless,
MrsZ