Problem with Group

Hi dear

I have created a private group, so only members can see this,
but why when i write a message in this group it show on my public dashboard too?

It’s a great problem and i can’t use it …

Other question …

I want create the group, because i must tag users for every news, i prefer forum, but i see i can’y use @user for tag a specific user … exist a solution?

For the first problem you can see the attach

Ale