User registration customization

in CW 2 Site-Admins Helping Site-Admins


I was asked if it would be possible to customize the user registration form on CW2 (for example, adding a birthdate field). From what I can tell, site admins don't have access to edit that form. Is there a way to edit /user/register ?

I do see access to LoginToboggan, and it has a few settings that can be changed, but my coordinators want more customization than that.