Should I reset or create a 2nd account / rca voyager android 6.0

A

AC Question

Bought a 7"rca voyager android 6.0 tablet for my granddaughter. it doesn't have the child app. so I entered my account info thinking I could then add an email for her. (As I was able on contixo kids tablet I have a pin to control settings.(read the problems ppl have after trying factory reset) how do I create a new account.remove mine as primary just use as recovery. thank you
please help!