You can create a batch rating and charging session from:
The File menu
The Tools menu
To create a rating session from the File menu
From the menu bar in the main window, select File > New > Rating Sessions. The Create Rating Session dialog box opens.
Set up the rating session.
To create a rating session from the Tools menu
From the menu bar in the main window, select Tools > Handle Sessions > Rating Sessions. The Handle Rating Sessions window opens.
In the Handle Rating Sessions window, click the Create button. The Create Rating Session dialog box opens.
Set up the rating session.