How to install OTRS 6.0.30 in Centos7

Repo: http://repo.openfusion.net/centos7-x86_64/openfusion-release-0.8-1.of.el7.noarch.rpm
OTRS Source: https://ftp.otrs.org/pub/otrs/RPMS/rhel/7/otrs-6.0.30-02.noarch.rpm
epmel release: https://harbottle.gitlab.io/epmel/7/x86_64/epmel-release.rpm

source

centos 7