Woocommerce Membership accounts

Hello guys,

At the moment I’m making a membership website. Almost everything is working fine now but I have one small problem. If people buy an account now, they get an email with a random username and password, but I want customers to fill out their own password and username at the checkout process. So they can login with their own username and password instead of a random generated username and password. How can I do this?

Thanks in advance,
Mark Haytema