Lighting, Light Fixtures, Ceiling and Exhaust Fans - Installing a dimmer switch

Hi, all! First let me say that I am a total novice in terms of home repair so I may not use the correct terms in describing my problem. I would like to install a dimmer switch for my living room overhead lights. The problem is that the current on/off switch for the living room is part of a unit of two switches, the other switch being for the kitchen. I would like to keep the kitchen on a regular on/off switch. I thought I could just replace the initial two-switch unit with a dimmer switch for the living room and a single on/off switch for the kitchen but it doesn't look like I can do that without widening the hole in the wall and replacing the metal box with one that can hold two single switches. Like I said, I'm a novice and I don't want to do any of that for fear I'll screw things up.

I was wondering if could find a two-switch unit like the one I have now only with one being a dimmer switch. The ones I've found on the market are really only meant to be wired to the same light.

Hope this makes sense and thanks for any help you could give me.

The Leviton 6628 is two dimmers in a single-gang box. I haven't seen a dimmer/non-dimmer combination.

Replacing the single-gang box with a double-gang is not difficult.

The Leviton 6628 is two dimmers in a single-gang box.

Thanks. I think this or something like it is what I might use. My next question is this. My kitchen uses florescent lighting. I know a dimmer won't dim a florescent light but will it is still turn that light on and off? Will it damage the wiring in any way or cause a safety hazard to use a dimmer on a florescent light. My living room lighting uses incandescent bulbs.

I would not put an incandescent dimmer on a fluorescent light, even if I did not try to dim the lights. I'm not sure exactly why, but I wouldn't do it anyway.