I tried to set up “User Permission” but the tab is not in “Setting”
Desktop edition is a single user program. Multiple users are available only in the server and cloud editions.
See Compare | Manager As @sharpdrivetek mentions some features only available in Cloud and Server editions, these are: Use on Tablets / Phones (web-interface, not really that gr8t), Multi-user Access and User Permissions (both useful if more users and permissions needed).