How do I change users in the EB CLI?

I deployed an application on EB with my own AWS account, but I need to do the same with another one. I have the user name, access key and secret access key for the AWS account I need to deploy from, but I don't even know how to switch out of my account to do it.

I've been able to sign into the AWS cli with those credentials, but I'm having trouble using the aws elasticbeanstalk cli, so help deploying my application through that would be helpful as well.

Thanks!