[Staff]

In the main database explorer on the left is a “System” folder, within the “System” folder is a “User” folder.
On the “User” folder is a table for Access Rights that summarizes all the Transaction Edit Range Dates.
The Transaction Edit Range Dates provide a “start” and an “end” date (a window) that allows for editing the books.
Just set the Transaction Edit Range Begin Date within the current year, and all prior years will be “locked”.