added vouching

src/Roles/Enrolment.md

@@ -48,6 +48,8 @@ This may be applied after the account becomes active again, but in that case sho
 
 This action should be logged, visible to all Level 3 users.  
 It is advisable to explain this to the demoted user, but that is at the admin's discretion.
+## Vouching
+If a Level 3 (or more senior) user vouches for a user who has no roles, that user may be immediately granted Level 1. This should be logged where Level 3 users can see it.
 ## Official Proposals
 
 ### Promotion to Level 1