Add a wiki to admin control panel

[Kiwilink]

We use a simple wiki site to store notes about our servers which at present is located on our Plesk server as a sub domain where it works fine but is probably a bit too exposed to the wide world.

I want to move the application to the pleskl internal server so that our admins can login to Plesk Panel click on a custom button and go straight to the wiki.

The custom button set up is ok but where do I place the application folder so that the plesk internal server can run them? I have tried /opt/psa/admin/htdocs/ but this never seems to work.

What we are trying to do is completely remove this application from the public server and only have it view-able internally

Dean