The command Add job to queue is available for the currently selected file(s), multi selection is possible. Calling the command opens a dialog where you can select the desired job from the list of all PowerPack jobs:

Add job to queue - Dialog

The command is also available inside the tabs Uses and Where Used of the Vault Explorer Preview Pane.
If a job is selected and the dialog is confirmed with the OK button the condition for the job is checked (see Configure jobs). If the condition is true following dialog is shown and the job is submitted to the queue:

Add job to queue – Condition true
If the condition is false following dialog is shown and the job is not submitted to the queue:

Add job to queue – Condition false
If multiple files are selected, then all files with the condition false are listed in one message box. The files with the condition true are submitted to the queue without a message.