Ok, I'm off the bus and home from work now. I've googled the manual (which is a bit rubbish for anybody who has a bit of technical knowledge that would actually help get the best from it).
The pen has settings to switch from what looks like cardioid (the rounder heart shape, the inside 'V' part actually being around the top part of the pen, kind of like this (room\top part of pen/room) for meetings to hypercardioid (the pointy one) to point at the people - they call it 'interview'.
It's hard to describe because it's a 3D shape - maybe a better analogy would be like a beachball sized, upside down apple with the stalk being where the pen is on the table. The hypercardioid/interview is where the apple has been stretched out to about 4-6 foot long and pinched. The former won't pick up Meeting Mumblers as they'll talk down their chest and to their shoulders.
I've never heard anything good from people who have tried to get anything used by a speaker on a lanyard, partly because it's always going to pick up movement and clothes and partly because untrained people turn their heads away as they speak, which it can't reliably pick up/the volume changes/you get drop out.
That's why performers use the tiny mics taped either to their faces if moving lots or lapel mics clipped securely to clothes that aren't moving if they're mostly stationary and reading the news - or why I spent a lot of time guiding people to their spot and telling them 'do not move, do not touch the mic and whatever you do, DO NOT GRAB THE MIC AND CUP THE ROUND BIT IN YOUR HANDS LIKE YOU'VE SEEN ON TV - because they're usually not even switched on and that performer idiot is lipsynching.