You should stop flip-flopping on important issues in the committee, it’s irresponsible. Everyone finds it annoying.
There are member(s) of a committee (委員) all getting together to meet. This is the committee itself.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. Of course it will help to know 委員 as well, since it's 2/3rds of the word.