Activities categories

I'm trying to figure out 'activities' - e.g. VistaTEC roundtable I entered as a 'meeting' but I also traveled to it, and I gave a presentation (NON academic). I would now like to upload my slides of the presentation - but there is no facility for that in the 'meeting' activity. [There are a couple of 'notes'/questions I want to put on activities to see how they might best serve 'non academic' activities...