How do I use the Ruler PatternGenius Posted on June 4, 2019 by sally HoltJune 4, 2019 G How do I use the Ruler Rotate to the Chart. Show Me Tap to toggle the ruler on/off. Show Me You can use the ruler to select a row or column or the entire chart. Then delete the select row/column or add a row column above/below/left/right of the selected column.