The username prefix allows you to specify a longer prefix for all user accounts under that organisation and is usually left blank.
Authorised addresses on this tab are the IP addresses where the account will work. You can use wildcards and hostnames for wider ranges, but you must list the external IP address - any starting with 10. or 192. are internal addresses and will not work. There are many online resources that will display your IP address for you.
88.104.35-37.* *.domain.tld 121.12.* 100.95.12.22
Ranges may only be specified within the last two octets. If you have a range that includes a slash it will need to be translated into an accepted format.
The details of the organisation's administrator.
This will create an associated administrator account
The organisation name is associated with all user accounts under this organisation. If this organisation has a unique identifier then the organisation name will be visible externally to both your users and to service providers.