diff --git a/docs/develop/servers/registrar/Protocols b/docs/develop/servers/registrar/Protocols
index ab9e8b148e..3b0343820c 100644
--- a/docs/develop/servers/registrar/Protocols
+++ b/docs/develop/servers/registrar/Protocols
@@ -338,7 +338,7 @@ error reply fields:
 broadcast a message (BRoster::Broadcast())
 
 target:		roster
-message:	B_REG_ACTIVATE_APP
+message:	B_REG_BROADCAST
 			"team":			B_INT32_TYPE
 			"message":		B_MESSAGE_TYPE
 			"reply_target":	B_MESSENGER_TYPE
@@ -347,7 +347,7 @@ on error:	- B_NO_REPLY (fatal)
 			- standard error
 
 message fields:
-- "team": The requesting team.
+- "team": The requesting team (team_id).
 - "message": The message to be broadcast.
 - "reply_target": The reply target for the message.
 
@@ -359,6 +359,48 @@ error reply fields:
 
 -----------------------------------------------------------------------
 
+start roster watching (BRoster::StartWatching())
+
+target:		roster
+message:	B_REG_START_WATCHING
+			"target":	B_MESSENGER_TYPE
+			"events":	B_INT32_TYPE
+reply:		standard success
+on error:	- B_NO_REPLY (fatal)
+			- standard error
+
+message fields:
+- "target": The target the event messages shall be sent to.
+- "events": Specifies the events the caller is interested in (uint32).
+
+error reply fields:
+- "error":
+  - B_BAD_VALUE: A request message field is missing or contains an
+    invalid value.
+  - ...
+
+-----------------------------------------------------------------------
+
+stop roster watching (BRoster::StopWatching())
+
+target:		roster
+message:	B_REG_STOP_WATCHING
+			"target":	B_MESSENGER_TYPE
+reply:		standard success
+on error:	- B_NO_REPLY (fatal)
+			- standard error
+
+message fields:
+- "target": The target that shall not longer receive any event messages.
+
+error reply fields:
+- "error":
+  - B_BAD_VALUE: A request message field is missing or contains an
+    invalid value.
+  - ...
+
+-----------------------------------------------------------------------
+
 
 MIME Database Requests
 ----------------------
diff --git a/headers/private/app/RegistrarDefs.h b/headers/private/app/RegistrarDefs.h
index bb4526bf88..839e9f5d97 100644
--- a/headers/private/app/RegistrarDefs.h
+++ b/headers/private/app/RegistrarDefs.h
@@ -57,6 +57,8 @@ enum {
 	B_REG_GET_APP_LIST						= 'rgal',
 	B_REG_ACTIVATE_APP						= 'rgac',
 	B_REG_BROADCAST							= 'rgbc',
+	B_REG_START_WATCHING					= 'rgwa',
+	B_REG_STOP_WATCHING						= 'rgsw',
 	// MIME requests
 	B_REG_MIME_SET_PARAM					= 'rgsp',
 	B_REG_MIME_DELETE_PARAM					= 'rgdp',