If you're using Medical Outlook in a trial period, typically your account will be limited to 3 concurrent active users.  This means that you can create as many user accounts as you like but only 3 of them may be 'Active' at any given time.

Every registered company must have at least 1 active user who is designated as an 'Administrator' and 1 active user who is designated as an 'Accounting User'.  Administrators can add / edit / delete other user accounts, while 'Accounting Users' have specific access to your company's Medical Outlook web account to view transaction reports, 'top up' your cash balance, buy postage credits or pay fees etc.

Creating your own private network within Medical Outlook

It is possible for you to create your own private internal network within Medical Outlook.  If you check the 'Internal Use Only' box for any given user account, then that user account will effectively be 'invisible' to other member companies searching for recipients to send a package to.  If ALL of the user accounts in your company are flagged as 'Internal Use Only' then your entire company will be 'invisible' in the Medical Outlook global address book.  This scenario might be desirable for several different reasons, you might want your company to present a 'Public' face to the Medical Outlook community while maintaining a 'Private' face for inter-office communications.  A hospital for instance might want to have several user accounts that are generic 'Department' accounts (Admissions, Referrals, Emergency, Radiology, etc.) which are public for other member companies to send messages to, while all of the individual user accounts are marked 'Internal Use Only'.

One final note about user accounts flagged as 'Internal Use Only'.  While accounts flagged in this manner are invisible in the global address book to other member companies, this does flag does not prevent users from sending packages OUT to other Medical Outlook users.  This means that if your Logon ID is flagged as 'Internal Use Only' and you send a package to a user at another company, that user can REPLY to you and they can also add your user account to their own Personal or Company address book for future use.

HIPAA Compliance

HIPAA guidelines state that:

Medical Outlook supports this requirement by allowing you to elect to enforce HIPAA rules.  Administrator users can enable this feature by editing their company information in Medical Outlook.  If enabled, Medical Outlook will force users to change their password every 30 days and will not allow them to use a new password that they have used within the previous 12 month period.