[Koha] Circulation Rules: Parent and Child Item Type

[Ms. Naveen Ali]

Dear All, 

In our library we rent textbooks for a semester at 10% cost of the book. 

To manage this in KOHA, I created a Parent Item with around 60 child items. 
Each child item has a different rental charge. 

I have applied a lending policy on the Parent Item with the understanding that it will apply to all child items. 
However I am not getting the desired result. 

To get my desired policy, I have to apply the lending policy to each child item. 

I don't think this is correct behavior but I don't understand what I am doing wrong. 

With best regards, 

Naveen Ali 

ITM-JE (EAKL) 
Inst Representative for 
HEC Digital Library Resources. 
NEDUET, Karachi.