Both inbound and outbound calls can be prioritized to be answered first.  Typically inbound is prioritized over outbound but it does not have to be. 

In the Dashboard. Go to Call Center and select Campaigns



Under Show Campaigns, Click on the Action Button and select Settings



Click the Inbound Settings Tab

Under General Settings, configure the following if needed

• Outbound Call Priority – This lets you prioritize calls in your campaign over other campaigns and queues. Set this Outbound priority higher than the other campaigns and Queues Priority can let you prioritize calls for this campaign.

Click on Apply Changes