Setting startup resolution for macOS VM

I've done some searching and haven't found an answer for what seems to be a basic question. Loads of clicking around in the settings and other places, still no luck. Hopefully it's something basic that I'm missing.

I've got two VMs - one linux VM that I usually use headless - and a MacOS VM that I just started up. Both start with the same default resolution when launched from Parallels Desktop. On the linux system, no big deal, it's text only. For the MacOS VM, it's starting quite small. I can easily resize the window each time, so it's not a huge deal breaker, but I feel like there has to be a way to set the startup resolution for a VM so it can be the size I want when it starts.

Running on a 2023 M2 Max MacBook Pro - current Sonoma 14.5 and current Parallels 19.4.1 Pro.