Pour the broth into the fondue pot and turn the temperature to 400 °F until the broth begins to boil.
You'll want to keep the broth boiling the whole time, but you can turn down the temperature accordingly to avoid making the pot boil over.
Start with tofu and veggies, as these take the longest time to cook.
To keep it sanitary, have utensils ONLY for handling the raw food and don't cross-contaminate with your eating utensils. When you do add the meat, put the lid on and let it boil for an adequate amount of time. It's best to cook in stages, to avoid cross-contaminating raw meat with cooked meat.
If you have kids, it's best if the adults do the cooking.