Management of users group Components Engine allows to manage the groups, to authorize the sections of the catalogue consultable over the web and cd-rom : Electronic Parts Catalog  Definition of infinite groups Setup of the group (language, markets and utizable discounts) Group priority Product setup (every product can be associated to one or more groups) Data list structure (every field of the data list can be associated to the group) Users identifying (every name of users identifying can be associated to one or more groups of users) Management of discount groups Electronic parts catalogs Components Engine (Illustrated Parts Catalog [IPC]) allows to manage discounts groups : Definition of infinite groups of discounts Setup of single discount (discount of general percentage, limited from amount of components, limited from the total amount) Discount priority Complete data list of spare parts (every spare part can be associate to one or more discount groups) Users identifying (every name of users identifying can be associated to one or more groups of discounts) Users group (every group of users can be associate to one or more groups of discount)