I'm not sure what the official MAAA rules are but I am also one of few Mode 2 fliers in my club and have noticed that the other Mode 2 guy who typically flies on the same day as I do if often quite busy helping beginners even though he doesn't have instructor rating.
He was the one who got me going when I returned to the hobby after almost 10 years away from it and is one of the best ones around helping beginners.

A lot of the guys who are the busiest helping others are also without instructors certification.

I think you only need to be a qualified instructor to sign off someone for their solo or bronze / gold wings but can help others prepare for their solo.

Have you searched the MAAA website for details?

There are some contact details there for officials who can without doubt answer this

Best regards

Ari
SRCS