update: info on impact of creating new orgs (#647)

docs/tools/aiven-console/howto/create-orgs-and-units.md

@@ -1,5 +1,6 @@
 ---
 title: Create organizations and organizational units
+sidebar_label: Create organizations and units
 ---
 
 Organizations and organizational units help you group projects and apply common settings like authentication and access.
@@ -35,12 +36,17 @@ units cannot be created within other units.
 ## Create an organization
 
 :::important
-We recommend using only one organization and using organizational units
-to group your projects.
-
-Creating a new organization requires you to manually configure
-organization-level settings again such as
-[billing groups, authentication settings, and groups](/docs/platform/concepts/orgs-units-projects).
+You can only verify a domain in one organization, meaning you can't set up SAML
+authentication, user provisiong with SCIM, or managed users for the same domain
+in another organization. Additionally, support and commitment contracts cannot
+be shared across organizations.
+
+When you create another organization you also have to manually configure all settings
+for the new organization such as:
+- billing groups
+- authentication policies
+- users and groups
+- roles and permissions
 :::
 
 To create an organization in the [Aiven