In Unifinder you can make calls in various ways:
A flash symbol indicates that the selected person is not available but you can try to call through anyway.
When you during a call in progress make a second call the first call is automatically parked.
In CallGuide Agent’s main window you see by the buttons which functions you then can choose between.
Alternate /, Transfer +, Retrieve,, Conference...
Just click on the relevant button or, if you are an operator, press the corresponding key on your keyboard.