Lotro comes with 6 quickslot bars (= 72 slots total). 5 of them you can move around freely on your UI. 1 of them is unmovable (can only be moved via skinning).
You can control the bars from the Main Options while playing. There's a section for hotkeys. Also to move things around you need to "
unlock" your UI.
Of course you can use
quickslots plugins now as well.