Click on the accounts icon (the person) in the top right menu.
Click on the vouchers tab on the left menu of the accounts dashboard.
Choose the balance to send from and the amount. Click on send to have the hash sent to you.
Check your emails and either copy the hash or click confirm. Confirm your 2FA code and click submit to create the voucher.
The new voucher will appear in the "My Vouchers" list. Send the voucher code to the person who will redeem the voucher.
You can check out how to redeem vouchers here. You can see all of these steps in the video below: