Not possible, but there is a workaround:
Create two "halves" of the section: one at 0 degrees and the other at 30 degress. Then take the two views and abut them in PM so they appear as one continuous section -- comprende?
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