For a sole trader or businesses with a single Person of Significant Control, the account holder will be able to access and manage the account.
For businesses with multiple Persons of Significant Control (PSCs), while all PSCs need to be verified to open the account, only PSCs who are also directors (identifiable on Companies House) can become users of the account and be able to access and manage it.
See here for information on how to add a new director to your account.
We are working on supporting additional types of access (e.g. access for accountants and bookkeepers) so please look out for future updates.