The above mentioned steps describe the chairside procedure. You can work indirectly on the model using the following procedure:
Take an impression of the clinical situation using a silicone impression material and create a stone model. Isolate it. Prepare the bridge on this model. The procedure is the same as the chairside version. Once the bridge is ready, cement it to the prepared teeth using adhesive resin cement. Working on a model is more comfortable and easier than a chairside procedure and the final result will be more precise and esthetic.