The group is set to Public! You can join it whenever! It's not Invite Only!

Thought I'd post this to fix any confusion anyone may have. It seems that when trying to join the group, after clicking the join button the group will say "Membership By Invite Only." Implying that you cannot join the group.

Don't believe those lies! :P

The group is set to public and it seems various Steam groups are bugged where after clicking the Join Group button, it'll then say "Membership By Invite Only."

After clicking the Join Group button, you have in fact actually joined the group. You can even confirm so by going to your profile and checking out your Groups list. If you have joined, you'll see the BacoNetworks group in your list.

Have fun. Hope this helped any confusion anyone was having.