Payout on Redeemed Only
If you are paying your teachers at the registration level, by default, Union settles both issued and redeemed. If you would like to you can choose to payout on redeemed registrations only. To enable this, visit your Union settings in the upper right corner and click Payroll. Then change to Redeemed Only.
*Note: this will not apply to any existing reports, only to new ones. To update existing reports (as long as they're not marked as paid) can be "re-calc".