In order to apply customization to the tabular report, click on the “Customize” button on report create or report edit page. Make sure that the visualization selected is Table.
To change the properties of the table header, you can use the table header script.
Double click on the table header icon to open the following modal window. You will see the column name and More button next to it. Click on the More button next to the column whose header you want to customize.
Change the font size, weight and alignment. Click on Ok.
The Table Header icon will be highlighted. Click on the small tick to apply the customization.
The respective changes are applied.
Thanks,
Helical Insight