The Properties menu item under Settings on the project Dashboard opens to display a list of the settings for the current project, as well as the Change Log for the project, shown in the screenshot below.
A number of these settings can be modified by clicking on the Edit button.
Clicking the Edit button at the bottom of the screen brings up the following:
Unchecking the Active checkbox will make the project unavailable for selection by the user from the Project Selection dropdown menu. Clicking the Save button saves the changes you have made for the project.