On your existing console, click on the orange banner on top to begin the migration.
Build your calling operations structure to configure numbers based on their use-case. Refer here to know move about calling operations.
Once your calling operations are set, you have to setup a process.
Now, you can start configuring your process. You can pick from the suggested number groups or choose from the other existing number groups.
Next, start adding numbers to your feature sets.
Once all your configurations are done, click on Finish Migration.
You're all set! Welcome to the new console!