Need to Filter auto-populated Calendar by more than 1 field

Hi,
Recently I was helped enormously on this forum when I needed a calendar which was autopopulated by a data list. One of the forum gurus was nice enough to help me out and created a great workbook for me. Now, I'm hoping I can find a way to improve upon the work he did. Basically, I've got 2 improvements in mind now - the main one is the ability to filter by more than one field. In the current version, I can filter by Client. I'd like to also be able to filter by Event/Service Item, as well as Assigned To. The secondary improvement I'd like to see would be to color code the calendar by event - ie, all Event 1s could be green, Event 2s could be yellow, etc. I've attached the file as it is now, with some sample data. Are these improvements realistic/doable? Thanks in advance for helping out -


avib