mattermost-desktop/resources/windows/gpo/en-US/mattermost.adml

<?xml version="1.0" encoding="utf-8"?>
<policyDefinitionResources revision="0.1" schemaVersion="1.0" >
  <displayName/>
  <description/>
  <resources >
    <stringTable >
      <string id="SUPPORTED_MMD43">Mattermost Desktop Application 4.3 or later</string>
      <string id="mattermost">Mattermost</string>
      <string id="DisableAutoUpdate">Disable Auto Updater</string>
      <string id="DisableAutoUpdate_Explain">If this policy is enabled, the Mattermost Desktop Application does not receive udpates.

If this policy is disabled or not configured, the Mattermost Desktop Application receives updates.
</string>
      <string id="PreventAddNewServer">Prevent adding new Mattermost server</string>
      <string id="PreventAddNewServer_Explain">If this policy is enabled, it is not possible to add new servers.

If this policy is disabled or not configured, it is possible to add new servers.
</string>
      <string id="ServerURL">Server addresses</string>
      <string id="ServerURL_Explain">If this policy is enabled, you can set one or more Mattermost server addresses. Use the syntax Servername,https://server.com|Servername2,https://server2.com

If this policy is disabled or not configured, no servers are preconfigured.</string>
    </stringTable>
    <presentationTable>
	<presentation id="ServerURL">
        <text>URL:</text>
        <textBox refId="ServerURL">
          <label/>
        </textBox>
      </presentation>
	  </presentationTable>
    </stringTable>
  </resources>
</policyDefinitionResources>