You can now tag everyone in a Facebook group and in this guide I will show you exactly how to do that.
I had no idea it was possible until I received an email saying, ‘I was mentioned in a post.’ I read to see who that was and the name doesn’t look quite familiar, but I remember joining the group.
Curiosity drives me to investigate how this person tagged me without mentioning my name, and it so happened that all of the group members were also included in the single tag, with massive reactions trailing the video and comments pouring in.
So here it is; however, in particularly active groups, it can be difficult to draw attention to a post when there is a lot of other activity going on.

Facebook has recently added a useful, albeit occasionally annoying, hack for this. Now, if you’re in a group and want everyone in that group to see one of your posts, all you have to do is comment @everyone. When you use that tag, it will notify everyone in the group that they have been “mentioned” by the poster.
I tried it with one of my groups, which has over 60,000 members, and it works fine.
According to Facebook, it’s “perfect for group reminders, impromptu get-togethers or when you need to gather the brain trust to crowdsource an answer to a time-sensitive question. This way, your message gets maximum exposure, and nobody misses out.”
It is, without a doubt, a quite certain way to get attention for a post, but it can also be used to get kicked out of a group if abused.
As a result, caution should be taken.