This read-create enumeration, basic(1) or extend(2), sets whether a flow template group is a basic type — configured via hh3cFTBasicGroupTable using address/protocol/priority criteria — or an extend type — configured via hh3cFTExtendGroupTable using packet offset and length matching. The chosen type determines which companion table the admin must populate to finish defining the template's match conditions. An admin building a template that matches on packet offsets rather than addresses would set hh3cFTGroupType to extend(2) and then configure entries in hh3cFTExtendGroupTable.