With the Project Manager (Project|Project Manager) you can manage your existing SmartSVN projects.
You can Add a new project. This button has the same effect as Project|Create Project from Directory. Select the local SVN-controlled root directory of the working copy for which you want to add a project and specify the corresponding Project Name. With Edit you can change the name or Root Path of an already managed project. Reset resets the settings of the selected projects to the default settings. Projects can also be deleted by Delete; the local directory itself nor any other filesystem content will be touched by this operation.
You can rearrange the order of the project list with Move Up and Move Down. The specified order is used for the Project|Open dialog and the directory tree's pop-up in the main window.