Edit C:\Windows\PolicyDefinitions\PowerShellExecutionPolicy.admx

??<?xml version="1.0" encoding="utf-8"?>
<policyDefinitions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" revision="1.0" schemaVersion="1.0" xmlns="http://www.microsoft.com/GroupPolicy/PolicyDefinitions">
  <policyNamespaces>
    <target prefix="powershellexecutionpolicy" namespace="Microsoft.Policies.PowerShell" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <supportedOn>
    <definitions>
      <definition name="SUPPORTED_WIN7" displayName="$(string.SUPPORTED_WIN7)" />
    </definitions>
  </supportedOn>
  <categories>
    <category name="PowerShell" displayName="$(string.PowerShell)">
      <parentCategory ref="windows:WindowsComponents" />
    </category>
  </categories>
  <policies>
    <policy name="EnableScripts" class="Both" displayName="$(string.EnableScripts)" explainText="$(string.EnableScripts_Explain)" presentation="$(presentation.EnableScripts)" key="Software\Policies\Microsoft\Windows\PowerShell" valueName="EnableScripts">
      <parentCategory ref="PowerShell" />
      <supportedOn ref="SUPPORTED_WIN7" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
      <elements>
        <enum id="ExecutionPolicy" valueName="ExecutionPolicy" required="true">
          <item displayName="$(string.AllScriptsSigned)">
            <value>
              <string>AllSigned</string>
            </value>
          </item>
          <item displayName="$(string.RemoteSignedScripts)">
            <value>
              <string>RemoteSigned</string>
            </value>
          </item>
          <item displayName="$(string.AllScripts)">
            <value>
              <string>Unrestricted</string>
            </value>
          </item>
        </enum>
      </elements>
    </policy>
    <policy name="EnableModuleLogging" class="Both" displayName="$(string.EnableModuleLogging)" explainText="$(string.EnableModuleLogging_Explain)" presentation="$(presentation.EnableModuleLogging)" key="Software\Policies\Microsoft\Windows\PowerShell\ModuleLogging" valueName="EnableModuleLogging">
      <parentCategory ref="PowerShell" />
      <supportedOn ref="SUPPORTED_WIN7" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
      <elements>
        <list id="Listbox_ModuleNames" key="Software\Policies\Microsoft\Windows\PowerShell\ModuleLogging\ModuleNames" />
      </elements>
    </policy>
    <policy name="EnableUpdateHelpDefaultSourcePath" class="Both" displayName="$(string.EnableUpdateHelpDefaultSourcePath)" explainText="$(string.EnableUpdateHelpDefaultSourcePath_Explain)" presentation="$(presentation.EnableUpdateHelpDefaultSourcePath)" key="Software\Policies\Microsoft\Windows\PowerShell\UpdatableHelp" valueName="EnableUpdateHelpDefaultSourcePath">
      <parentCategory ref="PowerShell" />
      <supportedOn ref="SUPPORTED_WIN7" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
      <elements>
        <text id="SourcePathForUpdateHelp" valueName="DefaultSourcePath" required="true"/>
      </elements>
    </policy>
  </policies>
</policyDefinitions>

Ms-Dos/Windows Unix Write backup

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