Click Universal Browser Manager toolbar button to load addon user interface in first (newly created and pinned) tab. Then click the same button to focus this tab. See http://forums.mozillazine.org/viewtopic.php?p=14748700#p14748700 for basic tutorial. Please, do not use review system to submit support or feature requests or report bugs. Use Support site or E-mail instead. Also see FEATURE REQUESTS list before you submit your feature request. Built-in commands for selected Tabs:

Move to Start
Move to End
Move to New Window
Close
Reload
Reload Bypassing the Cache
Copy URLs
Copy Custom
Bookmark to Target Folder
Bookmark to New Folder
Go to Bookmarks
Locate Folder in Tree

Built-in commands for recently Closed Tabs:

Open at the Start
Open at the End
Open in New Window
Restore
Copy URLs
Copy Custom
Bookmark to Target Folder
Bookmark to New Folder

Built-in commands for selected Bookmarks:

Open at the Start
Open at the End
Open in New Window
Delete
Copy URLs
Copy Custom
Move to Target Folder
Move to New Folder
Move within Folder (Top and Bottom)
Go to Parent Folders
Locate Folder in Tree

Built-in commands for selected History items:

Open at the Start
Open at the End
Open in New Window
Delete
Copy URLs
Copy Custom
Bookmark to Target Folder
Bookmark to New Folder

Built-in commands for selected Clipboard items:

Open at the Start
Open at the End
Open in New Window
Bookmark to Target Folder
Bookmark to New Folder