While viewing the spreadsheet, tap More, and then tap Edit One-line.
Type a new name for the one-line, if needed, and then tap Create.
The one-line is displayed. You can edit this one-line just as you would any other one-line, and it will also be available in the One-line Gallery. If you make changes to the one-line afterward, any changes that affect the spreadsheet are reflected in the spreadsheet.
Editing a Spreadsheet One-line
Editing an Existing One-line Created from a Spreadsheet