Mechanism to assigned user tasks

Hello there! I have some database table which contains info about my project users and their roles. May I don’t create migration my users to camunda db for assigne user-task to somebody? What is best practice to work with custom users?
Thanks.

You can assign task to users without those users existing in camunda’s DB.
The assignment at it’s core is just a string value associated with a task - you can get and set that as you like using data from your external user database.