I need to review many shelvesets using Visual Studio every day. I have added the TfsPendingChanges
command to the my toolbar, but the rest of the procedure to acce
Command that you are looking for is TfsUnshelvePendingChanges under File.
Right click on any toolbar, click on customize and a dialog will open. Go to 'Commands' tab on the top.
Choose appropriate button out of Menu Bar | Toolbar | Context Menu. Select the desired option under that. My favorite is to add it to Toolbar>Work Item Tracing (toolbar where New Item/Open Item appears).
After choosing from above step appropriately, click on 'New Command'. Then select to File>TfsUnShelvePendingChanges. This will add a shortcut to unshelve changes.
Thanks to @Alex for pointing out the correct command name. Writing here separately for people looking for answers in future.