Roles and permissions

I have integrated Moodle with Wordpress and In my portal student/parent they get registered in wordpress also student can enter his details and his parent details as well. both the account gets generated in both wordpress and moodle.

So we want to configured parent_id with student in Moodle at the time of successful registration instead of configuring manually.

we want dynamically configured in Moodle.

your suggestion would help us....!!!

Thanks