Hello @Greavesy,
you are in the good and proper track to solve the problem. Indeed, you need first to enable EMI and then enable APM.
Everything is documented here https://support.sas.com/documentation/cdl/en/vaag/69958/HTML/default/viewer.htm#n0ztu074vadeuvn17a1hpspp4bd7.htm
You will need to follow every step, including the links, specially at the bottom.
Now, you could check if you have /config/Lev1/Web/SASEnvironmentManager/emi-framework/ on your compute and/or web machine. If you do not have it, it could be that either your initial deployment did not include it (deployment plan file), or it was deleted by mistake afterwards, or just your SAS version is not including it. Therefore, please:
Check if you have this folder or not on your system
Check if it is in your deployment plan file (plan.xml)
Check your version of SAS VA
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