Add custom fields to my google calendar

I need custom fields added to events in our google calendar.
When entering an event into google calendar I would like more fields for :

-Name (drop list update by google sheet contact list)
-Phone (Auto fill by name)
-email (Auto fill by name)
-job title (text)

-add Item
(drop list update by google sheet item list)
(Option to add more items)


All the data should automatically create a new row in google sheet