added FAQ

Author: Rajat

apps/docs/src/pages/en/schools/sso.md

@@ -108,6 +108,10 @@ You need to log in to your school's MongoDB instance and run the following query
 db.domains.updateMany({}, { $addToSet: { "settings.logins": "email" } });
 ```
 
+### 2. Can I add multiple SSO providers?
+
+Since this feature is currently in alpha, you can only add one SSO provider at a time. We want to make sure that the feature is stable before adding more providers.
+
 ## Stuck somewhere?
 
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