diff --git a/handbook/troggle/serverconfig.html b/handbook/troggle/serverconfig.html
index 673875682..fa028966e 100644
--- a/handbook/troggle/serverconfig.html
+++ b/handbook/troggle/serverconfig.html
@@ -86,6 +86,12 @@ be copied here in due course.
 <li>to install the master system following a new operating system install on the public server
 </ul>
  
+ <p>Apache needs to run as user 'expo', not 'www-data' as standard. This is due to a basic incompatibility in permissions between apache and git: git does not honour existing permissions exactly. See
+ <a href="https://nim-labs.com/run-apache-alternate-user/">How to run apache as an alternate user</a>.
+ 
+ <p>Although troggle will appear to work with sqlite database, it needs a proper concurrrent access database to manage multiple users. sqlite is 
+single-user (effectively a separate instance of django is created for each page access, so even one person looking at several pages at once is 
+"multi-user").
 <p>The folder structure on the server is as shown below. It is all
 in the user folder for the user <var>expo</var> i.e. in
 <br>/home/user/expo: