Hi @Nick_Short and Welcome back 
!
There doesn’t seem to be one, from what I can see in the list of keyboard shortcuts 
.
And I’m not sure there should be one … as anyone in a doc can already unhide things we’re trying to keep hidden, that would just make it easier for people to access what they shouldn’t see 
.
(This might, maybe, get better once we get a single-page sharing feature though, depending on how it will be implemented )
As for the rest, what do you mean by :
… exactly ?
This topic 
might give you ideas on how to achieve user specific “display” though …
This might seem like an old trick but it’s still how “user specific” filters generally works .