Canvas - Freeze panes or pin column(s) e.g. PnL Accounts

Request from Consulting:

Some reports are very large and so it is necessary to hide and show columns (works!) and use freeze panes (Not working yet). Example: Finance Report shows PnL Accounts on the left side and if the user scrolls to the right they see only the values, but not to which PnL Account it is related too (when scrolling to the right). View attached screenshots.

It would be needed to add a feature to freeze or pin the PnL Accounts same as the comboboxes on the top.