To enter a credit card or change the credit card connected to your Orchestra subscription you will need to be logged into Orchestra.
From your top right website menu (right of 'Support'), select My Account.
Click into Billing Details and select Edit Billing next to the company profile you would like to change the credit card for.
If you haven't added any credit cards to your account yet, select Add payment method.
Enter your payment details and Save card.
To view any credit cards connected to your account, click on Show saved payment methods.
You can also access your billing details by clicking into Billing from your left side menu (where your company's product subscription details are stored) and clicking on the button Edit billing details.