How to specify a Project in Terraform

I have been trying to get details on the Project infrastructure that was recently announced but the documentation is thin. We are dealing with multiple AWS org-accounts and want to put each organization-account in a project. That means that I need to specify the project that a stack is assigned to. How does one do that?
The following code IS WRONG, but it is what I would expect to do. I can’t find documentation on what I should do however.

terraform {
  cloud {
    organization = "my-company"
    project = "my-project"  <<=== This is WRONG
    workspaces {
      name = "my-workspace"
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 4.26"