The Add to BOM Components dialog is used to define the number of instances of a component in an ActiveBOM. Active BOM supports adding additional managed (server) and unmanaged (library) components into the BOM. This is a two-step process; first the component is added into the BOM then the number of instances is defined. The remainder of the new item's parameters are edited directly in the BOM Items grid.
After adding a new server or Custom Item (by clicking the Add new button in the ActiveBOM document then selecting the item type to add), right-click on the new item then select the Add instances of [<ItemDetails>] command.