[FEATURE] Label Change Suggestions

[jbloeb]

Describe the solution you'd like
A clear and concise description of what you want to happen. Please provide any mock ups that will help articulate the solution you'd like to see.

Events Instances label is likely to be confusing to event organizers. Recommend changing it to Event Occurrences.
The Allow Other Attendees field label on Event records is also likely to be confusing. Recommend changing it to Allow Guest Attendees or Allow Attendees to Register Guests.