[Koha] Reservation of a borrowed book?

I am seeking a help from someone who familiar with Koha for the titled question Further, let say, ''A'' is seeking book and found it is borrowed by ""B"". ''A'' wants to borrow the book once ""B'' return the book. Any possibility of implementing that ?, Please help me. Harsha Balasooriya Senior Assistant Librarian, System The Open University of Sri Lanka Tel: 011-2881030