You can click SourceAnywhere Hosted client menu Tools| Status Search to view all the checked out files. For more information on Status Search, please click here. 

If you are Administrator, you can view/undo the checked out files through the SourceAnywhere Hosted Server Manager SourceAnywhere| Repositories|<repositories name> | Undo Check Out page. For more information on Undo Check Out, please click here.

If you have not installed SourceAnywhere Hosted Server Manager, you can download it here.