So far we've added columns that will allow our teachers to enter or amend the data in each column. SIMS call these columns 'data entry'. But sometimes we want to prevent users from entering their own data and just show them data, without the risk of someone accidentlally changing the dat in them. Examples of this are target columns and key stage results. In each case we might not want other people to be able to change a target or result from a previous key stage.Here's how to add them to our marksheet: