▪To adjust a column width, select a column, right-click it and select Column width. In the Dialog box, either type the desired width (in count of chars) and click OK, or drag the right border in the header (the caret changes its shape)
▪To move a column, select the column, right-click it and select Move column left/right (alternative: use the bar)
▪To move a set of columns, click the set/main heading, right-click it and select Move column left/right
▪To delete a column, right-click it and select Remove column(s).