Define organisation boundaries and user roles
A company account can group users, records, settings and subscription access under one organisation. Decide who can invite colleagues, manage billing, export information and change permissions. If a user belongs to several organisations, switching between them needs clear rules and a visible account context.
What to prepare for your project
List the roles in each customer organisation and the records each role may access. Test those boundaries in the backend as well as the interface, including exports, file access and administrative actions.