I can't approve submissions in this stream, but could if a stream owner sent me an invite and I accepted.
Stream Moderators and Community Moderators will only see the approval queue for streams they either own or have accepted an invite to moderate. Not sure about what Global Moderators can see, probably anything they want.
Seeing items in the approval queue is dependent on the stream settings the owner selects. If a stream is set for "No approval required." the owner and Moderators in that stream won't ever see an approval queue.
There are certain actions Community and Global Moderators can take anywhere on the site for content or conduct outside
imgflip.com/terms
I need to head out for the drive home, will get back to you with more later.