[Koha] Different circulation rules for the same item type

Dear all, We are testing Koha 3.0.6 and a question regarding a specific circulation rule has come up. How may one set up a circulation rule that states that a specific holding of a given item type (e.g. book) may be checked out for a period of 5 days, and another holding of the same type may be checked out for 10 days. To solved this, should we create 2 distinct item types, e.g. book5days and book10days? Is there a better way to do this? Regards, Miguel Ferreira - - Miguel Ferreira, Ph.D. KEEP SOLUTIONS, LDA. Departamento de Informática Universidade do Minho 4710-057 Gualtar, Braga, Portugal W www.keep.pt E info@keep.pt T +351 253604461 F +351 253604471