Log in to the HTML5 client.
Select the Work workspace, Gantt tab.
Select a project in the Project Data Selector.
In the Main toolbar, click on the Edit (
) button to open the Project Administration dialog box.
Select the Definition folder.
OR, select the Administration workspace.
Select a project in the Project Data Selector.
Select the Definition tab.
In the Dates section, select a calendar in the Calendar field pick-list.
Tip
If the project uses the Agile approach, select the Agile tab instead of the Gantt tab.