Where would I put extra information about a member that is important to know?
Once you add Custom Info to a member's profile, you can then search by Custom Info in your Member List.
To add Custom Info go to your dashboard > Manage Members > Member List. Select the member, select the Custom Info tab. Edit the Info Key by adding categories such as "Food Allergy." The Value will then be the food the member is allergic to.
Select Save Custom Info.