If your Schedule Mode is "Critical Chain", do not forget to select the Planning Mode. The Switch to Tracking Mode () button must be displayed in the Main toolbar.
Log in to the HTML5 client.
Select the Work workspace, Gantt tab.
Select a project in the Project Data Selector.
Select a task in the Gantt spreadsheet to display the Task panel.
Select the Assignments tab ().
In the Soft Assignment card, click on the More () button, and select the Delete command.