Open a previous file with vocals by selecting "File" and then "Open" or import a song with vocals by selecting "File" and then "Import File."
Highlight a vocal track by right-clicking the track listings on the left. Select a vocal part of a song by right-clicking at the start of the vocals and dragging the mouse until you reach the end of your vocal selection.
Select the track you're going to add vocal effects to by right-clicking it. Click the "Track FX" button in the track option window located on the left, indicated by a green cross. Click the "Edit Chain" button on the right corner of the "Audio Plug-in" window. Select an effect and then click "Add" to set the effect. When you're done, press "OK."
Set options for the effect you want. If selecting "ACID FX," select the "LFO" tab and check the box. Select the voice effect you want from the drop-down menu. Select the "LFO Clock" tab and set it to "Tempo." Set the percentage of depth you want the effect to have in the "Depth" slider field. Click the "EQ" box located on the left of the screen and set the "Treble," "Mid" and "Bass" as you want.
Close the "Audio Plug-in" window when you're finished setting the effects. Follow the above steps for each additional voice effect you wish to add. Select "File" from the top of the screen and then "Save" to save the file to your computer.