This article explains how to align column data to the left or the right using Table Plus macro of the Advanced Tables for Confluence app.
Enter either of the styles, style=text-align:left; for left alignment and/or style=text-align:right; for right alignment, as required under Column attributes, and click Save settings.
The output contains data aligned to the left and/or right as specified in Column attributes. For the given example, the data is aligned to the left for the first three columns and the right for the last three columns as shown:
We recommend to test this in a non-production environment before implementing in the production.