Aspects of the present disclosure provide techniques for adjusting the density and/or number of random access channel (RACH) occasion for one or subset of synchronization signal block (SSB) beams from the plurality of available SSB beams. To this end, features of the present disclosure utilize a beam-specific bit-field that is transmitted by the base station to the user equipment (UE) that may indicate RACH occasion density for a SSB beam or a subset of SSB beams. In some aspects, the time and frequency resources for RACH occasion with beam-specific alternative density may be identified via the resources for general RACH occasions. Based on the adjusted RACH occasion density, the UE may select one or time and frequency resources to initiate access with the base station.