Front end - not yet, build your own (this is on JEM roadmap)
Back end - yes, one by one
If you are looking for bulk import/export then have a look at attendees CSV export function on attendees view or general import of events, venues, categories.
It will be front end , so I will build my own. I am writing my own helper component and I will just add it as one of the functionality of that component. Thank you for the quick reply though I really appreciate it