I would kindly ask you to inprove tag filtering on Problems dashboard. This functionality already exist elsewhere, but should be added here too.

I want to split dashboard for two different departments, using tags.

I've got almost everythng untagged, and two tags OPERATIONS and SERVICE.

So, want to split problems:

SERVICE Problem dashboard have to display everything what have tag "SERVICE"
(it can be easily done by adding filter "Contain tag...")

And OPERATIONS Problem dashboard - everything, except "SERVICE", unless it paired with "OPERATIONS" tag.
(but this condition can not be implemented beacuse there is no button/swithc for "not contain")

For example this can be easily solved in Actions by defining next rule:

Tag equals OPERATIONS or Tag does not equal SERVICE

No buttons "Not equal" or "Not contains":

Solution for Actions:

Example of tagged triggers (and where it should be displayed):