Google makes it easy to copy and paste Hangouts Meet conferences across events

To change an event’s conference details:
1. Open the event in edit mode
2. Click “VIEW DETAILS”
3. Click the pencil icon to edit
4. Paste the code (or full URL) of another Hangouts Meet conference

This option is only available in the new Calendar for web.
https://gsuiteupdates.googleblog.com/2017/10/new-calendar-user-interface17.html

Hangouts Meet is available to all G Suite accounts
https://gsuite.google.com/learning-center/products/meet/get-started/
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