[Outlook] (equivalent add-ins) Clarify when to configure the Group Policy setting (#5011)

* Clarify use of GPO setting

* Apply suggestion

* Apply suggestion from review

Author: samantharamon

docs/develop/make-office-add-in-compatible-with-existing-com-add-in.md

@@ -1,7 +1,7 @@
 ---
 title: Make your Office Add-in compatible with an existing COM add-in
 description: Enable compatibility between your Office Add-in and equivalent COM add-in.
-ms.date: 06/18/2024
+ms.date: 01/30/2025
 ms.localizationpriority: medium
 ---
 
@@ -47,14 +47,16 @@ The following example shows the portion of the manifest that specifies a COM add
 ```
 
 > [!TIP]
-> For information about COM add-in and XLL UDF compatibility, see [Make your custom functions compatible with XLL user-defined functions](../excel/make-custom-functions-compatible-with-xll-udf.md). Not applicable for Outlook.
+>
+> - For information about COM add-in and XLL UDF compatibility, see [Make your custom functions compatible with XLL user-defined functions](../excel/make-custom-functions-compatible-with-xll-udf.md). Not applicable for Outlook.
+> - If you're unable to specify the **\<EquivalentAddins\>** element in the manifest of your Outlook web add-in, you must configure Group Policy instead. This only applies to Outlook. For guidance, see [Configure the Group Policy setting for Outlook add-ins](#configure-the-group-policy-setting-for-outlook-add-ins).
 
-### Configure the Group Policy setting
+### Configure the Group Policy setting for Outlook add-ins
 
-> [!IMPORTANT]
-> Applies to Outlook only.
+For Outlook web add-ins, if you're unable to update the add-in's manifest to specify the **\<EquivalentAddins\>** element, you must identify the equivalent COM add-in in the **Deactivate Outlook web add-ins whose equivalent COM or VSTO add-in is installed** Group Policy setting instead. This setting must be configured on the user's machine. Then, classic Outlook on Windows will use the COM add-in instead of the web add-in if they're both installed.
 
-To declare compatibility between your Outlook web add-in and COM add-in, identify the equivalent COM add-in in the **Deactivate Outlook web add-ins whose equivalent COM or VSTO add-in is installed** Group Policy setting. This must be configured on the user's machine. Then, classic Outlook on Windows will use the COM add-in instead of the web add-in, if they're both installed.
+> [!NOTE]
+> Configuring the Group Policy setting isn't necessary if the add-in's manifest already contains an **\<EquivalentAddins\>** section.
 
 1. Download the latest [Administrative Templates tool](https://www.microsoft.com/download/details.aspx?id=49030), paying attention to the tool's **Install Instructions**.
 1. Open the Local Group Policy Editor (**gpedit.msc**).