Hello John Bajer, and welcome to the Linux Containers community!
For VMs, Proxmox provides its own management procedures, internal decisions and interfaces to create them.
LXD/Incus are alternatives to Proxmox. Both are management platforms for LXC containers and VMs and, thus, you must choose one or another. They aren’t made to play together.
Since this forum belongs to LXC, Incus and their related projects, in case you decide for Proxmox, the best place to ask for help in how to use it to create VMs is the official Proxmox forum.