How To Mark a particular forum as read?

[Ranger1]

In the past, I could double click on the icon and mark every post in a watched forum as "read", for example I looked at gadgets and gear and then marked it read so as not to reread old posts. Am I missing something..?
Thanks!

 

[KingMC]

On mobile it's often hidden in the top menus, but it should be up there most places you go on the forums.

 

[Ranger1]

You are correct... When you click it it asks to mark that particular forum or all forums. Thanks!