Microsoft Office 365 Exchange FAQ
After ingesting content for a group, can I ingest content for a domain or everything that includes that group?
If you’ve already created a job for that group, you’ll be prevented from creating a job that overlaps it.
You can, however, have separate jobs that exist simultaneously for individual users and groups they belong to.
Are Office 365 Group Email and User Email mandatory?
Office 365 Group Email is mandatory only when you are crawling groups.
User Email is mandatory only when you are crawling a user.