Custom repos

What do I need to do in order to have custom repositories make available to my clients registered to sat 6.2? For an example; let's just say I have created a custom repo named 'local-repo-webapp-repo' and I will be pushing custom rpms on this repo. Now, I need to make this available on my newly registered RHEL 7 client so that when I run 'yum repolist' this custom repo shows up.
I tried creating an activation key for this task and registered the client, however, looks like I am confused with what subscription should be assigned to it since it's a custom repo. Any suggestions are appreciated.