Solution #1. Change the Joomla Text Filter option
Go to Extensions > Plugins > Editor.
Click on the TinyMCE plugin.
Find the Use Joomla Text Filter option, and set it to On.
Save the plugin.
Thank you eCC & Basara - this solved the problem for the joomla site - can now embed code in SP pages! I copied it into the title box - as it did not show up in the source code/text box area....
However it is not showing in the DJ EVent description boxes - short or long descriptions... Can this be done?