Go to KOHA administration > Patrons and circulation > Circulation and fines rules.
This will take you to a new page with a table of all the circulation rules in your library.
This table can be quite long and wide, so you may need to scroll to the right in order to see every column.
The rule, or rules, that need to be changed will have Book Rental, or some version of these words, in the Item Type column.
Once you have identified the rule to be edited, go across the line the rule is on to the very right hand side (you might need to
Click Edit on that specific line. The line you are editing will be highlighted.
At the bottom of the table, there should now be a line that mirrors the rules in the line you are editing.
On this bottom line, find the column for Hard Due Date. Ensure the dropdown box is switched to Exactly On.
Please note this is vital for Book Rental circulation to function correctly. If this option is set to Before or After the
Below the dropdown menu there will be a date box. Change the date in this box for the date you want the current
Scroll across to the right and hit save on the bottom line, where you have been editing.
The previously highlighted line will no longer be highlighted and the bottom line will revert to the default settings.