Permissions.md

@@ -141,6 +141,14 @@ We have four users with these assignements set:
 * head a   - deligable on Department A
 * head a.3 - deligable on Section A.3
 * head a.1.2 - deligable on Section A.1.2
-* Secretary a.1 - local on Section A.1
+* secretary a.1 - local on Section A.1
 
-### global vs deligable vs local
+### global vs deligable vs local
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+
+Global and local assignment both travel down the defined tree. Local puts the
+assignement on one node only.
+
+Global means that the permission is set independent of other people having an
+assignment set on a node.
+
+Deligable means that the assignment only works where no one else has been assigned.
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