Edit Mobile Sheet Def
In Edit Sheet Def, at the upper right, click Mobile.
This will toggle a pane on the left that shows a view that is optimized for mobile.
Double-click a Sheet Input Field to edit. Drag and Drop to change the order of the fields.
Use Mobile Layout: Check to enable mobile version of sheet for use with Web Forms.
Add Header: Click to add a header to the mobile layout of the sheet.