[FearlessWeeder]

Thank you again Lynne.

I think we only had one who was using invisible mode. I checked given what you said. Incredibly, when I changed the usergroup permission it must have changed it in the user's profile too. Either that or he changed it back himself which is possible. Thanks for mentioning this though. If I run into someone in invisible mode, I will know to go to the usergroups to enable then go to a specific user's profile to disable it before going back to the usergroups again to disable it.

Regarding the lock appearing- I went to the VBulletin Options. I found Forum Display Options. I am not finding Show Lock to Users. The options displaying for me are as stated in the manual:
Enable Forum Description
Maximum Displayed Threads Before Page Split
Show Users Browsing Forums
Highlight Threads in Which User Has Posted
Hot Threads Enabled
Hot Threads Qualifying Views
Hot Threads Qualifying Posts
Multi-Page Thread Links Enabled
Multi-Page Thread Maximum Links
Length of Thread Preview Text
Group Announcements
Separate Sticky and Normal Threads
View Style
Turn off sticky prefix in forum display

Is it possible this option could be buried somewhere else?

editing to add:
Correction, I went back to the manual and found Forum Listings Display Options. It was under that. Sorry.