Can I use "Incremental" Backup Type when using an additional remote destination to update and save the information that has changed since my last backup?
While setting up an additional remote destination cPanel by design cannot move Incremental backups. You can only use Rsync transport with incremental backups to be able to move them to your required destination.
When you select incremental backups, the system will not change or alter the state of your existing non-incremental backup destinations.
For more details about the settings that can be set to your backup configuration can be found here: https://docs.cpanel.net/whm/backup/backup-configuration/