Il faut passer par une requête sql , il faut utiliser le mode sql  par la commande sqlquery :
select
    Job.JobId,
    Job.Name,
    Job.StartTime,
    Job.Type,
    Job.Level,
    Job.JobFiles,
    Job.JobBytes,
    Job.JobStatus
from Job
join JobMedia on Job.JobId = JobMedia.JobId
join Media on JobMedia.MediaId = Media.MediaId
join Pool on Media.PoolId = Pool.PoolId
where Pool.Name = '<nom_du_pool>'
group by Job.JobId
order by Job.JobId desc;
 
Même requête indiquant la durée de rétention en jours :
select
   Job.JobId,
   Job.Name,
   Job.StartTime,
   Job.Type,
   Job.Level,
   Job.JobFiles,
   Job.JobBytes,
   Job.JobStatus,
   Media.VolRetention,
   Media.LastWritten,
   (Media.VolRetention - extract(epoch from (now() - Media.LastWritten))) / 86400
       as Days_To_Expire
from Job
join JobMedia on Job.JobId = JobMedia.JobId
join Media on JobMedia.MediaId = Media.MediaId
join Pool on Media.PoolId = Pool.PoolId
where Pool.Name = '<nom_du_pool>'
group by Job.JobId, Media.MediaId
order by Job.JobId desc;