RHOCP Subscription Management

I've installed an RHOCP v4.3 cluster, and it automatically applies a 60-day trial license. How do I apply my licenses to this cluster? I've gone into the Cluster Manager and have tried "Edit subscription settings", but that doesn't seem to allow me to attach a subscription to that cluster.
The only other instructions I'm finding are how to use subscription-manager on RHEL nodes, but that doesn't apply since all my worker nodes are using CoreOS.