Adding a WiiM Pro to my Mini and 3xAirport Express multi-room setup. The Home app, on the AirPlay Receiver setup page, says right at the top, "Cast audio from WiiM Pro to HomePod and other Airplay and AirPlay 2 enabled speakers." However, no Airplay (1) devices show up, just AirPlay 2 devices, despite the inclusive statement just quoted. iTunes sees all Airport Expresses and WiiM devices, and AirPlay casts to them simultaneously. The WiiM Home app will link AirPlay 2 devices and cast simultaneously.
