By default, MemberMouse adds every shipping option you have configured to an order form, even if you don't want them displayed (like ones that are internal use, free shipping options, etc).
Custom Shipping Options for MemberMouse enables you to filter out those extra options by specifying which ones you do want displayed. Only want U.S. and International shipping as choices (leaving free shipping for your Customer Service reps, or as a special offer)? No problem! Just add it to your URL and you're good to go.