How to keep Column length fixed in Power Bi?

I want to keep the Column name fixed with respect to Period, YTD, and FY. Currently, I am using a text box for the period, YTD, and FY, and the problem is the column length of the ACT period and all other changes concerning the filters. I want to ensure that Act period and Budget always be within 'Period' similarly for Budg, ACT, and ACT LY within YTD and Budget FY1 comes under FY.