Select the AWS option from the list of providers. If you haven't already configured credentials for AWS you'll be asked to provide them now. Enter a name for your credentials then enter your Access key ID and Secret access key. Once this is done, click Save.

Once you have added your credentials (or if you already had them set up) select your cluster options from the fields below.

The environment options are refreshed automatically if the information cached by Portainer is over 12 hours old. You can manually refresh the options by clicking Reload cluster details under the Actions section.

You can also expand the More settings section and set groups and tags for your environment now or you can do this later.

Once you have made your selections, click Provision environment to begin the provision. If you have other environments to configure click Next to proceed, otherwise click Close to return to the list of environments where you will see the progress of your provision.