Added Identifier property (#1345)

Author: Vic-Cooper

mppm/mppm-reference/play-mode-scenario-window-reference.md

@@ -17,8 +17,7 @@ You can change the Multiplayer Role in the **File** > **Build Profiles** window.
 |Additional Editor Instances|||A [virtual player](https://docs-multiplayer.unity3d.com/mppm/current/virtual-players/) that exists in the Unity Editor.|
 ||Name||The name for this additional Editor instance that appears in the [Play Mode status window](play-mode-scenario-window-reference.md). |
 ||Multiplayer Role||The [Multiplayer Role](https://docs.unity3d.com/Packages/[email protected]/manual/multiplayer-roles.html) that this instance uses. Unity uses this Multiplayer Role and ignores the Multiplayer Role you assign in the Project Settings window. This property appears when the [Dedicated Server package](https://docs.unity3d.com/Packages/[email protected]/manual/index.html) exists in your project|
-||Tag||One or more reference words that you can use in a script to assign the main Editor Player to a certain behavior.
-To control whether a player exists on the client or server, use the **Multiplayer Role** property.|
+||Tag||One or more reference words that you can use in a script to assign the main Editor Player to a certain behavior.<br/>To control whether a player exists on the client or server, use the **Multiplayer Role** property.|
 |Local Instances|||Instances of this project that run on your local machine.|
 ||Name||The name of this instance that appears in the [Play Mode status window](play-mode-scenario-window-reference.md).|
 ||Build Profile||The [Build Profile](https://docs.unity3d.com/6000.0/Documentation/Manual/build-profiles.html) that this instance uses. When you build on a Windows device, select the Windows platform. When you build on a MacOS device, select the MacOS platform.|
@@ -29,6 +28,7 @@ To control whether a player exists on the client or server, use the **Multiplaye
 |||Arguments|The [UGS launch parameters](https://docs.unity.com/ugs/manual/game-server-hosting/manual/concepts/launch-parameters) that modify this instance.|
 |Remote Instances|||Instances that exist in the [Unity Cloud](https://docs.unity.com/cloud/en-us) and use [Unity Gaming Services (UGS) Multiplay Hosting](https://docs.unity.com/ugs/en-us/manual/game-server-hosting/manual/welcome-to-multiplay).|
 ||Name||The name of this instance that appears in the [Play Mode status window](play-mode-scenario-window-reference.md).|
+||Identifier||The label, in a string, that determines the name of the Multiplay build, fleet, and server. This string field uses the format `CreatedFromTheUnityEditor-[identifier]-[username]`. Don't use any special characters.|
 ||Multiplayer Role||The [Multiplayer Role](https://docs.unity3d.com/Packages/[email protected]/manual/multiplayer-roles.html) that this remote instance uses. Unity uses this Multiplayer Role and ignores the Multiplayer Role you assign in the Project Settings window. This property appears when the [Dedicated Server package](https://docs.unity3d.com/Packages/[email protected]/manual/index.html) exists in your project|
 ||Advanced Configuration|||Optional properties that you can use to debug and control this remote instance. |
 |||Fleet Name|The name of the server fleet to display in the Multiplayer Hosting environment. |