[Koha] "Exported Selected Items'' || no selection option in SERIAL> CLAIMS l<'Late Selections list

[HRS]

Checkboxes are missing in Serial > Claims > 'Late Selections list'' .
So I cannot  do "Exported selected items""  in my installations(v 3.12.0
and  3.12.3)

In Koha Demo, I have observed  same

 But Manual shows there are check box to do  the section

I am new to KOHA and we, Open university, Sri Lanka testing  the system
feasibility this is a drawback to us as  we have ample amount to Serials

Please help me  ,Thanks in advance


Harsha Balasooriya
Senior Assistant Librarian, System
Main Library
The Open University of Sri Lanka