How do I use a Convection Microwave Oven Hybrid?
It depends what mode of cooking you're doing. There are a few possibilities:


convection: heating with a heating element (no microwave power), circulating with the fan
microwave: heating with microwaves, no fan
microwave+convection: heating with microwaves, also using the fan (and possibly a heating element, who knows)


If you're in convection mode, it's just a small oven, so everything needs to be oven-safe, but you don't have to worry about microwave safety. You likely need to use the rack, and it's possible you need to remove the turntable (check the manual).

If you're in microwave mode, it's just a microwave, so everything has to be microwave-safe, but you don't have to worry about oven safety. Note that this may mean you'll need to remove the rack (check the manual).

If your appliance has an actual combination microwave+convection mode, you'd need both oven safety and microwave safety.

In all cases, it'll be best to just check the manual to be sure - you need to know what the modes are (and what the buttons on your microwave do), and what the rack and turntable are okay with. In particular, you want to be very sure if you're expecting microwave-only or convection-only; if you accidentally end up with microwave+convection, it could be an unpleasant surprise.