Use this command to create a copy ('Branch') of your local working-copy in the branches directory of your repository. By default, SmartSVN will fail if the specified branch already exists. Select Overwrite existing branch, if necessary to create the branch anyway. Switch to branch will immediately switch to the new branch after creation.
This command is similar to Modify|Copy WC-URL (see Copy WC-URL), but simplifies the special task of 'Branching'.