Voicemail drops are set up in Sales Sling as Campaign Dispositions.  To drop a prerecorded voicemail an agent will have to wait for the voicemail beep and then click on the voicemail drop disposition.  This will play the prerecorded message and disposition the call as such.  

1.  Find the campaign you wish to configure voicemail drop for in your manager dashboard and click on on the Actions drop down menu.

2.  Navigate to Edit Configurations>Dispositions.  Click +Add New Disposition and follow the configuration settings in the example below.

3.  When you are ready to record in a voicemail, click Start Record.  When you have a recording you are happy with click Save.

Note:  We recommend recording a fresh voicemail regularly to avoid repeat drops of the same recorded message.