Blackbaud Sphere allows sponsors to sign up for a sponsorship online and choose to pay by check.  This ability must be enabled through the following steps.

1.  Go to Communities > Special Events > Friends Asking Friends > Kintera Thon
2.  Hover over the event's name and choose Website Info
3.  Click Website Features
4.  Scroll down to the Sponsorship Opportunities section
5.  Check the box labelled "Provide sponsors the option to pay by sending a check in by mail."
6.  Click Save at the bottom of the Website Features page
7.  When you are ready to apply the change to your site, go back to the Webinfo Checklist and click Publish Your Event now.

If a sponsor chooses the "Bill Me" option during payment they will generate a pending sponsorship, visible in the event's Bookkeeping section under "Pending Sponsorships".