I need to adjust some columns on ‘Display Columns’ , but the configuration menu ‘Display Category’ not appears for me on Power BI previous version (November 2019), even on atual version. See bellow:
You need to click on the pencil icon and then click on the Reference tab. Select “Add New Reference” , now you can add “Today” or customize the dates. Then save the reference.
This feature is available from the Gantt Chart version 1.1.0. Please verify if you are using the latest version of the visual.