Windows 10 (64 bit), Far Manager 3 v3.0 build 5254 x64
I download plugin PanelTabs (ver. 1.15.0.0) from official site.
Unpack archive and copy to %Far%/Pluggins
folder.
Restart Far. Press F11.
Add current folder to tab by select "Add Tab
"
But new tab is not shown:
Why?
The plugin adds a row of bookmarks to the FAR panels, which can be switched by mouse or keyboard. To make the tabs visible you should reduce the height of the panels by at least one line (Ctrl + Up)
You can see the help (in Russian), by pressing F11, go to Panel tabs
and press F1. I've translated the documentation here: https://superuser.com/a/1280376/274351 (with the help of Google Translate).
I usually set shortcuts to different folders and then jump to them.