Hi. We have an ancient Plone setup for a web server and it might now be less painful to move to a new CMS rather than try to migrate our current site to the latest Plone so we can shut down our last Redhat 9 box...

So specifically, I'm wondering how to implement the following in Concrete5...

We run a number of regular talk series - there's seminars from external speakers, forum talks by dept staff, and postgrad forums by the students. Each of these series is organised by a different person.

So in Plone I designed a new 'Content Type' of 'Talk', which had fields like time, place, speaker, abstract, and another 'Folderish Content Type' of TalkSeries, which had fields like 'Organiser' and 'Usual Venue'. A TalkSeries can only contain Talk objects.

I then create a TalkSeries object for each of the different series in the CMS, and I can use permissions to make sure only the relevant organiser can add new talks to their series. Works very nicely. But will be hell to port to the latest Plone. I don't grok Zope3...

So how does this map to the concrete5 way of doing things? From the docs it seems that a Talk should be a new Block type, but I can't see how to organise Talks into TalkSeries. Should I create a Talk block class and then sub-class it as ForumTalk, SeminarTalk, and then give the organisers permissions to add that sub-class only?

And then how do I restrict the locations where those items can be put? With Plone there's no content/web page separation - a content item maps one-to-one to a web page. In C5, blocks live in pages. So maybe each talk should be a page? Another thing I need to do is to show a list of upcoming talks and maybe a calendar (I see that this is definitely a new block that I can then stick in sidebars etc).

As you can see it's not an easy mapping from Plone concepts to C5 ones.

Thx for any help and pointers.