You can fake it. Here's how.
Ask your field service overseer for your own map because you want to work your lunch hour, after work, whatever. Likely he'll say no but you can probably get a handful of not home sheets or something.
Tell everyone you will work your lunch hours from your office with tracts. Sit with a tract on your desk or in your car window while you snore and listen to the radio.
Choose a mid-week session a couple of times when the pioneers are out and do about 2 hours with them and then "go on calls".
Meet with your group on a Saturday/Sunday and of course you started early didn't you when you worked the mall (hid behind a newspaper on a park bench/ railway station) ?
Show your ugly mug about 5 times during the month for about an hour a time and make up the rest! Simples as we say in the UK!
You'll be a MS soon if you're not careful!