I wanted to be able to quickly access the Git "Manage Branches" from the toolbar.
- Go to View >> Toolbars >> Customize
- Switch to the "Commands" tab
- Then radio check the "Toolbar" option and in the drop down select "Standard" (in my case, I wanted to add it to the standard toolbar. You can add it to a new toolbar or a different toolbar).
- Click on the "Add Command" button
- Select "View" under categories
- Select "GitRepositoryWindow" and also optionally the "GitWindow"
- You now have easy access to the commands: