Monorepo: deploy from button

Hello everyone. I have a problem with deployment an app from a Monorepo via Deploy button.
I have a monorepo with structure like this :

myrepo/
    app1/
        ...
        package.json
        netlify.toml
    app2/...
    uiLibrary/...
    otherLibraries/...
    package.json
    turbo.json
    ...

I don’t see an option to set package directory from the deployment button. according to the documentation, it can only be set from the UI

I want to create a deployment button for a deploy app1 from button, but when I try to deploy, I cannot specify Package Directory. And as result, the netlify.toml configuration file is not read… how could I do this? Thanks

This would be a feature request. I’ll file it, but not sure if/when it will be implemented.