Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a configuration for a control resource set (CORESET) of a shared radio frequency spectrum carrier. The UE may identify a bitmap included in the configuration. Each bit in the bitmap may be associated with a respective control resource block group. The UE may identify, based at least in part on a value for each bit in the bitmap, one or more control resource block groups that are included in the CORESET. The UE may monitor for downlink communications in the one or more control resource block groups. Numerous other aspects are provided.