Turbine has updated the UI for LOTRO with Vol. 2 Book 9 which part of Siege of Mirkwood.
To access the new feature, all you d is go to the Options Panel and select “UI Settings”, or click the new Customize Toolbar Slots button to the left of the Auto-Attack button.
It has Skirmish Join and Skirmish panels, and customizable Toolbar Slots that will open up whatever panel you want – there’s loads more detail through here.
This was a much needed update to the UI, and it should make things much easier.