What are you going to do with the information? Do you need to summarize it? Report on it? Print it?
I'd recommend using a second table called Sessions which Session Occurences relates to. In a layout based on Sessions you can present the data from Session Occurences. That presentation can take many forms. I would do it with button bars, but you could use simple text objects that hide/show or even portals arranged horizontally or in a repeating field all of which can be modified to reflect the data in Occurences.