Limiting which columns display, or re-ordering columns in the Devices tab can be helpful as you focus on a specific search or bulk update task. While the Sheets interface allows columns to be hidden manually, Chrome Gopher’s Show columns in Device tab feature allows you to more quickly specify which columns to show. Choose which columns you would like to view/hide and hit Apply. Hidden columns are simply collapsed, not removed from the sheet, so they can be restored at any time.
Freezing columns and rows is accomplished by clicking and dragging the gray frozen column separator.