Hello, contact Facebook if you have problem communicating something specific in a shut gathering. You can make an impression on a particular individual of the gathering or on the whole. Now, tap on the upper right corner of the gathering and then snap on the send message tab. Next, make an impression on a particular individual or to all.
From any Facebook page, again click that downward-facing arrow, click "Help & support," and select "Help Centre." On the Help Center page, scroll down as far as you can. On the left near the bottom of the page, click "Visit Help Community." You will be taken to a page where lots of questions have already been answered.
Regards,
Bruce