In this dialog you can select a user that is for instance connected to a resource. It is possible to filter the view by typing in text to the field on the top part of the dialog and pressing Enter. Select the desired user or users (multiple selection is available with the help of Shift and Ctrl keys) and click the OK button to confirm your selection or the Cancel button to close this dialog without committing any changes. The Help button opens this section from the User's Guide.