Right-click the header of the column you want to sort by, and click Sort Ascending or Sort Descending.
In the TimeLiner window > Tasks tab, click Columns > Choose Columns.
In the Choose TimeLiner Columns dialog box, select the check box next to one of the ten available user columns, for example User 1, and click OK.
The custom user column has been added to TimeLiner. By default, it has the same name as the option you selected in the dialog box.
Right-click the added column, click Rename Column, and type in a new name, for example 'Cost'.