You have the option of having both accounts under one profile in Client Zone. You would need to migrate any existing line to Afrihost by signing it up in Client Zone as a migrate and you can choose a data plan to go with it.
If you would like to move an account from a business profile to a personal you got to My Account in Client Zone and select Transfer Products. You then select your product and specify the email address of the profile you want to transfer the product to and follow the rest of the prompts to the end.
I hope this helps