There is no way to have the same Forum appear at multiple points in the sequence. You need to leave the Forum set to "Lock when finished" off (which is the default) and when you want the learners to continue the discussion, put up a noticeboard that says "Go back to the BLAH Forum activity and discuss this further".
I know this isn't what you really want, but that's what I can offer at the moment.
Something that has been requested by users is the ability to have a "floating" activities, which is an activity that is attached to the lesson and is always available to the learner throughout the lesson, but isn't in the sequence flow. While that would be nice, I'm not going to make any commitments about when we'd do it!
But I can help you with the FCKEditor wish. Turn on "Allow learners to use rich text editor" in the Advanced tab and the Forum should now show the FCKEditor. Some of the features of the editor are restricted e.g. users can't upload pictures within the FCKEditor like you can in authoring.
When you turn on this option, the learners are no longer restricted in the lengths of the post, although there is a limit (very very large) in the database!
Also, learners should be able to attach files. At the end of the Editing page (e.g. Reply Message) in learning, there is an "Attachment" section.
This is designed for just the occasional attachment though. If you want the learners sharing lots of files, web links, etc and simultaneously discussing the resources, then the combined Forum and Share Resources is better.
Have a look at the attached screenshots.
Posted by Fiona Malikoff