Make sure your questionnaire or form is asking the right questions. It should steer them in the direction that will make them realize the amount they have on their plate.
You can do a little steering verbally as well in order to assist them further. The questions that are best to ask are:
1. Name some of the tasks you do on a daily basis.
2. Out of those tasks, which ones take up most of your time?
3. In order of importance, which tasks do you need done.
Be straight forward, direct with your questions. Help them in being straightforward with their responses. No beating around the bush. Things become very unclear when you aren't direct.
I hope this helps.
Michelle
OnTask Assistants of America