Departments can be created, employees can be assigned to those departments, and trainings can be assigned to employees of a certain department.
Add new departments under Settings > Manage Departments. Then go to Training > Administration to assign departments to your existing and newly created employees, one at a time. Or for new employees, you can import them, with departments, under Training > Employee Import.
To assign trainings, on the Training Administration page, click the Choose an Admin Tool select box in the upper left hand corner. Choose Assign Training/Policy. On the right hand side under Choose Employees, utilize the Departments filter to filter the employee list.