Depending on the type of fish, yo can place more than one fish in the bag IF and only IF they are the same species and are peaceful, like tetras, rasboras. Fishes like angels MUST be individually bagged.
1. Collect about 10 gallons of clean fresh water and add dechlorinator.
2. Catch and bag your fish. It's best to individually bag your fish, so there's no aggression or fighting, since they will be in a confined space. Smaller, peaceful fish like tetras can be kept more than 1 in a bag. Double bag is the best. If the wheather is cold in your area, you should put all the fish in a cooler.
3. Put your substrate in a container with the tank water to be moved to the new location
4. Put your media from the filter in a container with the tank water to be moved to the new location.
5. Remove the rest of the equipment.
6. Collet the rest of the tank water.
Once you get to the new location...
1. Setup the tank and add the new and old tank water.
2. Setup the filters and decor and heater.
3. Float the bags in the water.
4. Release the fish.
The reason I suggest using the same water from your current location instead of the new location, it will give the fish an easier time to acclimate, since it's the same water they came from. If the water from the new place is different, acclimating will take longer and could further stress the fish.