Excluding Billers from Join Options
In the Sites Admin, edit a site, edit a Join Option, and remove
information for billers you don't want to use. Billers without
information won't be used.
Join Options Order
Cascades are listed in alphabetical order on the join form. To re-order the options, rename the cascades.
Denying Join Options for Old Members
On the Sites Admin, edit the site you with the join options you want to deny.
When adding a new join option (or editing an old one), check the
Disallow for Old Members checkbox to remove this option for old members.