When someone logs in for the first time using your preferred IdP, we’ll create a new, free Viewer seat in your Workspace. Your Workspace admin can upgrade it to an Editor seat at any point. If you have a long list of users, don’t worry — contact us and we can help.
Keep in mind that only users that your security team has given access to through your IdP will be able to log in to Sketch.
Once SSO is enabled, all users in the Workspace will have to login via SSO. However, the admin(s) of the Workspace will still be able to use login credentials to access Sketch in order to troubleshoot configuration.
Note: Just-in-time provisioning of accounts (JIT) avoids the need for SSO users to create a Sketch Account before signing-in with SSO. The first successful login with an IdP will automatically create an account with an identity and membership for the Workspace where that IdP belongs.