The status applied to the project controls what actions can be performed, for example, if timesheets can be entered for the project, or if invoices can be created. The status is shown in the top summary panel of the work breakdown.
To change the project status:
Click the current status shown in the top left corner of the work breakdown to open the change status page.
Or click the page actions button and select 'change status'.
Learn more about the project status options.