Best practices for remote interpreting will vary based on the size and style of the event. For example, meetings of 3-4 people will integrate interpreters differently than webinars with 200+ people.
The National Association of the Deaf has authored this informative article about remote communication access. While aimed at employers, the best practices contained in the document apply to other settings as well.
Perhaps most importantly, consider having the host spotlight the interpreter(s) to ensure that they are prominently visible to deaf attendees.