Disable multi-select

We are not using webviewer and instead building a custom UI with document/annotation manager. I need to disable the ability for users to command+select multiple annotations in the document when there is more than one. I am using the ‘annotationSelected’ → ‘selected’ event listener and currently selecting the annotation that is in the 0th place. Our UX/UI designer does not want this ability at all. how can I disable?

Thanks for contacting us for support.
To better assist you, I need more information:
Are you only using the core package instead of our UI?
What version are you using?
Can I know what use case and reason why you want to disable multi selection annotation?
You say that annotationSelected event listener, this is expect behaviour to get the selected annotation. I am still confused that what you want to disable, could you please give me more information about it?/