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 Transactions & Cost Items tab ().
In the Cost Item Assignment card, click on the More () button, and select the Edit command to open the Cost Item Assignment dialog box.
Select a distribution type in the Distribution Type field pick-list.
Close the dialog box.