How do I find actors by tag?

In the scene outliner I can add tags to my actors but I see no way to search for actors by tag. There’s no tag collumn in the search dropdown, and I don’t know how this is relevant for coding. There is nothing in the documentation for tags in the scene outliner for actors. A little help would be appreciated.

Regards,

Used as a filter “Actor has tag” node you have to type or copy paste the tag name.
For example “on actor begin overlap” connect other actor to “actor has tag” return value connect to “branch” gives true of false.