Adjusted instructions for Companion Script

Signed-off-by: Michael J. Kidd <linuxkidd@gmail.com>

index.html

@@ -203,7 +203,8 @@ <h3>Requires <a href="https://www.sharpcap.co.uk/">SharpCap Pro</a> version 4.1.
                 <li>Monitor for an Alert sound, and banner at the top to Remove or Apply the Solar Filter around the time of Totality.</li>
             </ol>
 
-            <b><em>Optional:</em> Download the Powershell script and assets</b>
+            <b><em>Optional:</em> Download the Powershell script and assets</b><br />
+            <span><b>Required</b> if <span class="code">Use the Powershell Companion Script</span> is set to Yes</span>
             <ol>
                 <li>Download Powershell script <a href="javascript://" onClick="downloadPSScript();">april-2024-solar-eclipse.ps1</a></li>
                 <li>In the <span class="code">C:\Program Files\SharpCap 4.1 (64 bit)\</span> folder, create a new folder named <span class="code">scripts</span></li>