The Columns tab of the Datasheet Properties, New Datasheet, and Datasheet Type Properties pages is used to define which columns appear on the datasheet, and in what order they are displayed. If you are creating or editing a datasheet that is assigned to a datasheet type, you cannot edit any of the datasheet properties on the Columns, Filters, Organize, Time Views, or Dashboard tabs on the New Datasheet or Datasheet Properties page: