How to Install Additional Languages on RHEL 7

Hello,
I have some instructions to install additional language support for a server running RHEL 7, but things do not seem to work. I have actually been able to figure that they do work (mostly) for RHEL 6. The instructions say to try the following command sequence, to say, install hebrew support:

$ yum install fontconfig freetype urw-fonts yum-langpacks
$ yum groupinstall hebrew-support
$ yum langinstall he_IL

The first command in the sequence is the only one that works. The second command produces the following output at the end:

Warning: group hebrew-support does not exist.
Maybe run: yum groups mark install (see man yum)
Error: No packages in any requested group available to install or update
Uploading Enabled Repositories Report
Loaded plugins: langpacks, product-id, subscription-manager

and of course the third command also fails. I have enabled all repositories that I have access to, to no avail:

rhel-7-server-extras-rpms  
rhel-7-server-optional-rpms  
rhel-7-server-rh-common-rpms
rhel-7-server-rpms 
rhel-7-server-supplementary-rpms

I am wondering what I would need to turn on this support in RHEL7. Please advise.