You can define the Bleed & station numbers in the single design. Look in the file menu - JobInfo - S&R. For the station number define a placeholder (live text) for the location on the single file. Choose pick. In the nested module you can choose to get the station number location from the single file by enabling the option.
Same for the Bleed, first define it by dragging "trim & bleed" rectangles in the single file. Choose to use the info from the single file in the Nested module.