First you have to decide, whether you want to use ready made pizza base available in the market or want to prepare from scratch.Go through the manual given during the purchase of your microwave oven, and read the details.Most of the new models include pizza making instructions too.Time and method required to cook one varies from one machine to another.
you can make pizza easily using the OTG (Oven Toast Grill) model. Use the pizza base available in the market. just chop the vegetable u want to add inthat(onion, tomato, simalmirch, even cooked mushroom well chopped) add cheese too. bake it for 10 mins. in 150 deg.
If you want to make it from scratch then it is better to buy a bun specially made for pizza which is the base for the pizza. Add chopped vegetables as you require and with it add the masalas like corrionder powder, Pepper powder, chat masala and if it is a non veg then add chicken or mutton or any meet which is boiled and crush the flesh and spread it on the pizza and then add cheese over it and put in the Owen for about 10 to 15 minute.
Your pizza is ready to serve. use the sause are required.