Posting HTML to blog and pages for Pro Members

I can't finding the security setting that will allow my members to post html to their own pages, and post. It seems I as the superadmin am the only one that can post embed codes for videos. I've logged in as another member who was having issues, and I can't post a video either. This leads me to believe it's a security filter I have set up somewhere to limit what members can do, but I can't seem to find where it is. Can you please help. I've given access to my site to look