I have been wondering how to lock a few rows and/or columns on a side in Excel. I have seen that being done many times, but did not know how to do it myself.

In the Windows menu (Before Office 2007) and in the View menu (Since Office 2007) you will find an option named Freeze Panes. You have three selections:

1. Freeze the selected top rows
2. Freeze the selected left columns
3. Freeze the selected top rows and left columns

If you just need one row and/or column, place your cursor in the A1 cell.

To freeze more rows and/or columns, place your cursor in the A1 cell, then select the number of rows and the number of columns you want to freeze.

Then select the option that applies to your case.