What user name and password we should give during ServiceNow MID Server configuration?

We know that Service/Deamon that facilitates the communication between ServiceNow instance and external Services/Data Sources.

During the configuration of agent/config.xml we need to give the username and password. For that

1. Create a new user say SNCMidServerDev1
2. Assign the mid_server role to the user (Not the admin role and never)
1. Just the mid_server role is sufficient
3. Use those credentials in the Midserver configuration