Turn on features and set up permissions to prepare your source org for data migration.
- Log in to your source org.
- Enable event management:
- From Setup, in the Quick Find box, enter Scheduler, and then select Salesforce Scheduler Settings.
- Turn on Event Management.
- Enable activity settings:
- From Setup, in the Quick Find box, enter Activity, and then select Activity Settings.
- Select Allow Users to Relate Multiple Contacts to Tasks and Events and then click Submit.