Panasonic G7 Video Help for Work!

If you have experience shooting video, and a limited editing software, best to keep it simple. No need to play in all kinds of color grading, as your gear and software doesn't allow it. Forget dumbing down the photo or picture style, or you'll ruin the data for the video. Just shoot natural without touching any adjustments. Shoot 4k and you'll have enough detail to work with. Keep iDynamic on standard, iResolution on high, use proper WB for the room, and use good light for lighting up the room.

Also, shoot 2 cameras if possible. And Audio quality is a huge factor, make sure your audio is good. The mic setup you have should work.  Also, you can increase volume levels beyond clipping for better audio while recording and in editing.  Digital audio allows for it.  Editing the audio will be the key to getting adequate volume levels.

You can do some camera movement, but on interviews, keep it simple, on a tripod.

Interviews are not difficult, keep it simple is the best way to go about it. Take a few practice takes, and sound checks when you set up for the interview shots.  Push your volume higher to find the limits.

If you want to get creative, you can add in intro shots, closing shots of the topic, person, building, and room beforehand. There you can use wide shots to set the scene,  Big camera movements to add attention,  and zoom shots for transitions.

Congratulations on your gig, may it work out well. Don't stress, and keep it simple.