Meeting Manager will use a service account. IIS Application Pools will run using this account. Connect to a domain controller and open “Active Directory Users and Computers”, you’ll find it under Administrative Tools. Create a new user account. You can use your naming convention. In this example it’s named “contoso\svc_meetings”.
It is highly recommend to not use SharePoint System Account as it could lead to problems. You may use any other account.
On the SQL Server – start SQL Management Studio, expand Security – Users. Create a new SQL user account, disable password policy. Naming is up to you, in this example it’s named “meetings”. Make sure that the password doesn’t contain “-character as later on we’ll use it in XML.