Thank you so much for the reply!
I actually tried the reverse logic from my initial attempt, and it worked:
- Set the global size limit to 5 mib, which is what I wanted for my media forum
- Went into the extension group setting for images, which I wanted to limit to 2 mib - it was set at 5 mib since that was the global limit. All I had to do was reset the limit to 2 mib.
- I now have an images group set at 2 mib and a media forum with typical audio and video extensions (mp3,mp4, etc) and the forum allows me to upload 5 mib files.
- When I post do into a regular (images only) forum which uses the images group, I can only upload up to 2 mib
It now works perfectly! The only flaw I see is that in a regular forum that uses only the images group which is limited to 2 mib, it displays the global setting of 5 mib. Members have already questioned why a 5 mib limit is displayed when they can only upload 2 mib.
However, I'm delighted that it is working - all I need do is tell everyone that the images limit is 2 and the media is 5 (everyone can upload images, but only a few selected members can do both.