A suborganization is a fully autonomous organization with it's own administrators, healthcare providers, patients and groups. The suborganization is always connected to a parent organization.
If you as an organization are starting to use Luscii with more departments and patients, it might be useful to split these up over different suborganizations. By using suborganizations, patients remain separated between different departments, and programs and protocols cannot get mixed up. You can also create more specific authorizations for healthcare providers regarding which patients they can treat, or which protocols they can use. At the same time, the administrators of the parent organization can still administer all groups and healthcare providers in the entire parent organization and its suborganizations.
Example A: You are a hospital and next to the Cardiology department, Pulmonology also wants to start using Luscii. You can now create two suborganizations, one for Cardiology and one for Pulmonology.
Example B: You are an organization with 20 clinics distributed over the entire country. You want the patients of the clinics to be separated, but you want all clinics to use the same protocols. You make a separate suborganization for each location. The protocols are created and administrered from the parent organization.