How to enable php55?

Hi all,

I have a rhel 6.7 system with php53, 54, and 55 installed. Just installed 55 but I am having a hard time getting php55 to stay enabled. I found this article: https://access.redhat.com/solutions/1451783
however when I log off and back on the system php is not enabled. I have also ran source /opt/rh/php55/enable but I still have the same results when I log off.

How can I get this to stay enabled?

Thanks!