AskiaField provides a report that shows statistics of the outbound calls made by agents on a specific task, within a selected time period. To run this report, in the tasks window right-click the task and select reports, then agent outbound calls.
The following dialog appears:

Once you have specified the desired time period (by specifying the start date and end date), click OK.
When the report has finished running, the outbound per agents stats window displays per-agent statistics for the selected period. It contains the following information:
Agent: The agent's name.
Presence: The amount of time the agent has spent logged into the system.
Time speaking: The amount of time the agent has been engaged in conversation over the period.
% speaking: The percentage of the agent's time spent logged into the system that he or she was engaged in conversation.
Interviews started: The number of interviews that were started by the agent.
Interviews completed: The number of interviews that were successfully completed by the agent.
% completed: The percentage of the agent's interviews he/she started that were successfully completed.
Started hour: The number of interviews started per hour.
Completed hour: The number of interviews completed per hour.