From the homepage, select Cards under the Card issuing section on the left navigation bar.

Click on the card you wish to set a limit on.

Scroll down to the Restrictions section and under the Velocity check restrictions, click Edit.

Choose the limitation you want to add. Do note that the single transaction limit refers to the limitation imposed per transaction.

You can limit the card by the transaction amount or number of transactions. Once done, apply it by clicking Save changes.

The saved limitation will be displayed.