Hi Mounika,I had the same question, and when I enabled it for my project, I saw that it's free while it's in preview. This information is shown in the GCP Console so I don't have a proper link to send you, but I took this screenshot that I'm attachin...

Google Workspace always does gradual rollouts, see the release announcement for details :Rollout paceRapid Release domains: Gradual rollout (up to 15 days for feature visibility) April 18, 2024Scheduled Release domains: Gradual rollout (up to 15 days...

Awesome! It's only missing an option to allow any participant to annotate. Currently, the host has to manually allow each participant