Follow steps with respect to Screenshots attached:
1) Click on "Forum" tab
2) Drop down menu will appear
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more...
3) Scroll down and click on "Monitor" from drop down menu
4) In monitor forum click on "Select Monitor Group"
5) I have selected "TL Monitor" just for reference. But you should select "Forum Monitor"
⏺️After that click on 3 parallel lines at the right end of the screen (marked in blue colour)
6) A list will appear, scroll down and click on "Quit the FM Monitor Group". After this you will out of FM monitor group