Right-click the column, adjacent to which you wish to add another column, and choose Insert, a new column will be inserted to the left of the selected column.
Hide Rows Columns
In large tables or summaries in Excel 2010 it can be useful to be able to hide rows. In this guide we will run through how to hide rows.
This is what you do:
1. Select the rows you want to hide.
2. Right click the selection.
3. Click Hide.