Go here, logging in using the TNSAR credentials

Or, when logged into PayPal (with the TNSAR credentials) use the drop down menu Pay & Get Paid -> Send Money

Follow the 13 steps demonstrated below

You can pay someone using their name (if they have a PayPal account), email address or phone number (either with or without a PayPal account)

You can send payment via the TNSAR PayPal account, or linked bank account. Your decision