diff --git a/resources_delegation.md b/resources_delegation.md
index 744fad323..424446a28 100644
--- a/resources_delegation.md
+++ b/resources_delegation.md
@@ -1,6 +1,6 @@
 # Resources delegation
 
-This chapter is about how to delegate resources (VM, hosts) to other users.
+This chapter is about how to delegate resources (VM, hosts) to users.
 
 The idea is to allow external users (not admins) to:
 
@@ -8,9 +8,11 @@ The idea is to allow external users (not admins) to:
 * delegate VMs to your dev teams...
 * ... or to your clients
 
-## Concepts
+> Remember: admins can do everything, thus permissions don't apply on them.
 
+## Groups
 
+Groups are a set of users. You can use groups to apply permissions/ACLs on a whole set of users, instead of repeating superfluous operations on multiple users separately.
 
 ## ACLs