Merge pull request MicrosoftDocs#7754 from priyanshamishra/patch-1

Update Set-CsUserCallForwardingSettings.md

Author: v-dihans

skype/skype-ps/skype/Set-CsUserCallForwardingSettings.md

@@ -98,7 +98,7 @@ Accept wildcard characters: False
 ```
 
 ### -DelegateRingWaitTime
-Specifies the time, in seconds, to wait before ringing delegates. Acceptable inputs: 0, 5, 10.
+Specifies the time, in seconds, to wait before ringing delegates. Acceptable inputs: 0, 5, 10, 15. The parameter DelegateWaitRingTime needs to be explicitly set to a positive value  to allow call forwarding to delegates.
 
 
 ```yaml