In Interactive Viewer, you can move an attribute or measure column, but you cannot move a dimension column in a summary table. You can delete a dimension column, an attribute column, or a measure column. You can move attribute columns among other attribute columns in a summary table. When you move a measure column in a summary table, you can move it only within the other measure columns.

To move a measure column, select the column and choose Column➛Move to Left from the context menu.

To delete a column, select the column and choose Column➛Delete Column from the context menu.