Product developers with edit permissions for product specifications can set that specification as the primary specification for a season, or change which specification is primary for a season. Setting the primary specification for a season happens in two ways, the first specification created and associated to a season is automatically set as the primary specification, or you can select the Set As Primary action from the specifications Actions menu. For seasons with multiple associated specifications, the primary specification is identified by the word Primary after the specification name.

If the selected specification contains a primary BOM which identifies a primary material, that material is available to view in the season line sheet.