help me understand Modules package RHEL 8

I am having a problem understanding modules. In RHEL-8.8 doing an rpm -qa shows no specific module rpm, and doing a which module responds with module () { _module_raw "$@" 2>&1 } a man module responds with *command interface to the Modules package.* Can a simple explanation of this be given... what/where is the module package in RHEL8? the main problem I am having is with the MODULEPATH and MODULESHOME environment variables. In a specialized install of RHEL-8.8 for a cluster mgr software it makes use of modules and sets these two environment variables to a single specific location... /cm/local/modules/. But I do not know where it does this and there is no /usr/share/Modules folder present unlike in a default install of RHEL, so my other question is what is the proper convention for setting these two environment variables when a /usr/share/Modules/init/ does not exist? I am only ever using the bash shell so I **assume** that would correspond to /usr/share/Modules/init/bash for which has this statement within: # define module command and surrounding initial environment (default value # for MODULESHOME, MODULEPATH, LOADEDMODULES and parse of init config files) _mlcode=${_mlre:-}/usr/bin/tclsh /usr/share/Modules/libexec/modulecmd.tcl bash autoinit _mlret=$? so I assume this is the original conventional location of MODULEPATH being set? In a standard RHEL-8.10 install for reference this is what is under /usr/share/Modules/init/ bash fish lisp profile.csh ruby.rb tcsh_completion bash_completion fish_completion perl.pm profile.sh sh zsh cmake ksh profile-compat.csh python.py tcl zsh-functions/ csh ksh-functions/ profile-compat.sh r.R tcsh