I applied through the website and was given a phone interview. Next I went in for an office interview with the VP of Sales. Lastly was the field ride and a panel style interview in front of 5 people who worked there.

Interview was VERY fast (Denver) - had 1 phone interview and 3 in person interviews within 10 days. Very intense so research ADP before going in for your interviews. They are look for more personality than technical sales experience. If you get through the interviews, expect one in person interview with the Sales VP, a drive along with someone in your potential role and then a role play session with a sales manager. RESEARCH ADP BEFORE GOING IN! And don't be socially awkward ;)