Select the beams, open the beam settings dialog, and set the "Home Story" to your 2nd level. Under the Floor Plan and Section Panel, Floor Plan Display, set "Show on Stories" to "Home Story Only".
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004