[Update of the answer I gave below]
Interviews are now required of advocates.
And both advocates and mentors must obtain high scores on a far more formal corporate-style interview.
Mentors must also complete a half-hour written component.
It all depends on your position. I did a lot of work from home and emailed it to either myself (to open when I got to the office) or the appropriate person(s).
I did not do taxes from home, but I was also a Mentor Community Peer Advocate at the same time for over two-and-a-half years.
A number of four or five-hour shifts on the front lines doing information and referrals for a total of about 20 per month, about 15 hours per month in various meetings, and about 30 hours of work from home.
Some off-site outreach when events are planned.