thank you for your reply.

please note the issue has been raised with QBO development.

A QB team member replied with:

 "I would like to inform you that we received the feedback about having an option like in QuickBooks Desktop wherein you can just press a single key or a shortcut key that will show all the purchase ledger on the system. This feedback of yours was submitted to our Product Development team. They will collate all feedback and will identify new features that will be available in the next monthly release. I sincerely apologise for not being able to find a workaround but I do hope this feature will be available very soon. I know a lot of customers also wanted to be able to do this inside the QuickBooks Online System."

So I am now waiting along with many others...

best regards, Arden7