The multi-record editor will then be displayed, you can overwrite the existing data in those records you wish to edit by inputting data into the fields. Fields left blank means that the existing data for those fields will be unmodified.
To clear out tags and notes for the selected records, simply add a tag with the text "---" or enter "---" in the notes field and the existing data for those fields will be cleared out.
If you have supplies set up, you can click the "Choose Supplies" link under the Cost field, and a dialog will prompt you to select the supplies and quantity of each supplies you wish to requisition for this record.
