We’re not sure people realize this, but we have a classifieds section set up for casting calls. The link can be found on the Voice Actor Directory page. Here’s the direct link. We probably should have brought attention to this page back when the site launched. Everyone seemed to find it easily enough at the time so we didn’t think about it.
It was always a pet peeve that casting calls would get lost in the forum and/or not deleted when they were filled cluttering up things. When we designed the page, we decided to give them their own home. This is why there is no casting call section of the forum. You do need to be registered on the site to post your casting calls.
The classified section is divided into male and female parts, so you may have to post twice for the same project, but it will help the VAs track down relevant parts.
The casting calls will automatically delete themselves after 30 days so there are no worries if you forget to remove them. They will take care of themselves.