On the Engage Health Systems portal (https://my.engage.gp/index.php) you are able to create groups for your organisation. These groups can then be amended and removed if needed.
To access this page, you'll need access to the admin portal in the link above and then click the groups tab.
To add a new group to the organisation, simply create a new group. To amend or remove any existing groups, you can scroll down to manually find it or search in the search bar shown.
Groups can also be shared with other organisations if an agreement is in place