1. Press the Edit Existing Samples button. Note that the status reads Edit Mode.
2. Select Site, Interval Type and Interval Name from the drop down lists.
Note: Because existing samples are being edited, the drop down interval list will only display existing unscheduled samples and their associated sample dates.
3. The sample can now be edited as appropriate and the changes can be registered by pressing the Register button, or the sample can be deleted completely by pressing the Delete This Sample button.