How do I add a reserve amount to a credit card via Opayo?

Use Paytia reserve and charge to add a shadow payment reserve to a customer's card and debit money from that transaction as well.

Using the Opayo DEFERRED option; which is setup on Paytia as Reserve. Paytia will instruct Opayo to register a shadow (not collected at this point in time) amount of money against the payment card. 

Opayo has rules for using a shadow "Reserve" charge

1. You can only RELEASE once per transaction, and only for an amount up to the DEFERRED transaction amount.

2. DEFERRED transactions remain available for a single RELEASE for up to 30 days. After that time they are automatically ABORTed by the Opayo system.

3. Note: Ideally you should RELEASE all DEFERRED transactions within 6 days. After 6 days, the transaction shadow may disappear from the cardholder’s account and the customer can spend the previously protected funds.