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 Team folder, Project Team sub-tab.
OR, select the Administration workspace.
Select a project in the Project Data Selector.
Select the Team tab, Project Team sub-tab.
Select the Resources you want to remove by ticking their checkboxes.
Click on the Delete () button.
Click on the YES button of the warning message.