Masks are an optional feature for queuing and prioritizing jobs for transcriptionists.
When masks are not used, jobs are routed to any MT having permissions for those jobs (based on author or document type). The order in which they are routed is determined by the queue method setting for the Account.
Alternatively, when masks are used for a transcriptionist, they override MT permissions and define the jobs and the order that jobs flow to that MT. Masks can be defined and enabled or disabled by the Administrator in the IMC. Using Transcriptionist Settings for each user, the Admin can also choose to allow an MT to manage her own masks.