Hi David,
I didn’t put Fax/Sms in until v5.0.2 so for your 4.2, you are using the older sms or email for notifications.
Is the only documentation i’ve done with the first part of that tread giving most any info needed to install. v5.0.2 is up to module version v1.2.0. Most issues with installing are with server rewrite config and setting up the Twilio account. Sometime the module installer can give grief.
If you want to write an install, i’m sure others would appreciate but, unless I add another vendor(if time) I doubt i’ll do anymore development on module.
I almost pulled it from v6.0.0 but luckily I didn’t have to spend too much time bringing the dependencies up to date and I already had done the BS3 convert to BS4.
Also somebody may want to update the vendor/openemr/oe-module-installer-plugin/src/CustomModuleInstaller.php to be compatible with composer v2+