Mass rejection images

Hi sorry if this is obvious but can't seem to work out how. Rather than rejected each image as I go I want to rank images for lightroom 1-5 and then once finished, click to reject all the unranked images. 
 
Many thanks

Sort & Filter panel -> XMP rating: checkmark 'Not set' -> Ctrl-A (Select All) -> Right-click on an image in the filmstrip -> 'Move to _Rejected'

https://updates.fastrawviewer.com/data/FastRawViewer2-Manual-ENG.pdf#pag...

FastRawViewer Manual comes with the application (FastRawViewer main menu -> 'Help' -> 'PDF Manual') and is a fully searchable standard PDF file.

Thank you so much, I was 99% of the way there I didn't realise they were check boxes , was double clicking on the not set and everything. 
 
thank you again. 

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