While issuing a card to a team member, you can set spend controls. You can also change the spending limit later.
Go to the Cards section on the admin portal
Select the card you want to manage.
Click on Edit Spend Limit from the menu shown on the page, and change it to the desired amount you wish. You can set it for a daily, monthly, approval-based, or all-time limit. However, we recommend choosing a daily, monthly, or approval-based limit, so the card user can continue to initiate purchases. Setting an all-time limit will stop card users from making purchases once the limit is exhausted.
Know more about how card spend limit works here.
Still confused? Here's a helpful video that will help you edit spending limits and set card restrictions