In the event that you hold a personal account and also act as a signatory for a business, and you want to register both for online banking, you will need to complete the registration form separately for your personal online banking and your business online banking.
This is because account numbers are directly linked to the customer type and profile, i.e. a personal customer can only see their personal accounts on online banking and a business customer can only see their business accounts.
If you act as a signatory for more than one business, you will need to sign these up separately as well since only the relevant accounts for that business will show online.