You can Add, Edit, or Delete your repositories through the Repository Manager dialog box.
If you hover over an item in the list, you can set that repository to Launch connection on startup of the PDI client. If you set a repository as the default on startup, you can clear this behavior by checking Launch connection on startup again.
You can also click on an item in the list to select it. Once selected, you can either Edit or Delete that repository. If you choose Edit, the Connection Details dialog box will appear.