S3 Object Storage with Embedded Pict-rs install?

I built my instance from source: https://join-lemmy.org/docs/administration/from_scratch.html

It shows very few options for pict-rs in the UI config. I was wondering if I'm still able to apply object storage and/or conduct a migration?

Or, am I going to need to install pict-rs from source as well?

If I am able to use object storage with the embedded install, what settings would I need to add to the lemmy.hjson file?

Thank you!