AFPUB 2. Edition Windows 11 Pro, Version 22H2, OS build 22621.819. 32GB RAM
Trying to follow this instruction (which is not mega-clear and, yes, English is my mother-tongue) No tooltip appeared and AFPUB locked up. Had to close from Windows' taskbar; tried a second time, same result but had to use Windows' task manager to close AFPUB.
To change the width of a column without affecting other column widths:
-click and drag over the separator between two adjacent columns in the header area. A tooltip will appear displaying the dimensions of the column, and the table will increase its width as you drag the separator.