If all you want to do is see the changes in any given value like A1c's that are certainly important to most docs for sure, you need to do a little work in the Admin section. I don't rememember if there is a limit on the number of tracked items but Nancy is up to like 15 and counting and we have lots of DM patients and she uses this feature all the time. So set of stuff like triglicirides, A1c's and other things you like to track in the tracked items or data section of Admin and then you can enter and track them. The values will be in the second most left tab in the chart in the summary section down at the lower left hand corner of that page.
Then after you entered some values over time and so you now have some to compare, hit edit or print button on the left and up come the numbers you have tracked for that patient and the dates they were entered. Although not graphable I believe it certainly give you the ability to enter, record and see their changes over time on any given value of any given patient... Not perfect but certainly gives you most of what you need on a patient per patient basis.
Nancy enters certain values from the labs we don't interface from as well as some things we do in house too. Must say we really like our interface and now seems like Bert's FAP is going to help with quick and easy access to our lab results as well as other reports and the like. It seems to track the major things she needs and she likes it. Hope this helps.