I am using ClassExtender to extend modUser with the ext_user_data table, work great. My question is does this component support the extension across more than one table. Looking through the Class it does not appear to be but I thought it couldn't hurt to ask.
ex:
ext_user_data (current)
ext_user_referrals (new, many-to-one with modUser)
"One of these days I will get around to my own website... Its only been about 12 years... maybe tomorrow

"
It doesn't out of the box, but I think it might if you manually edited the schema in \core\components\classextender\model\schema\extendeduser.mysql.schema.xml.
I had that similar thought but wasn't sure the effects of running [[ClassExtender]] with table_name `user_data` against a schema that has more then just that one table in it. I will spin up a site and give it a test and see what happens.
"One of these days I will get around to my own website... Its only been about 12 years... maybe tomorrow

"