I am a consultant and have several clients where it is my job to keep the minutes and assign various tasks to staff, then keep track of due dates, progress, etc. So far I've been using a word document I title "agendas" and have a separate one for each client. I keep track of my to dos in my GTD system, but how do I keep track of the other people's? As they are clients, assigning them a task through Outlook seems a little too presumptous, plus not all of my clients use Outlook (I'd really like to use the same handy form or project workgroup solution for everyone). I can't hand the tasks off completely into a "waiting for" folder, as A - it needs to be divided out by client, and B - I need to proactively make sure they're doing what's supposed to be done by a certain date or date range.

Any suggestions?