What information can members update themselves?

Controlling access for member attributes

You can control some of the Members Attributes that are visible from the link in the Member Update emails (Members > Member Update Email) by setting the security level of each attribute either to Guest or Member.  This setting is done by going to Members > Settings > Member Attributes. Click on the name of the Member Attribute you want to edit and from there you can control the visibility/security level. 

Any attribute you want to be available for editing by the guest/member should be set to the Guest or Member level.  If you do not wish for an attribute to be visible by the Member, set that attribute to Leader or Staff level (or higher).