crouton4 Hi Steve,
You already have the template override of JACM styles in-built which have been styled and customized specifically for JA Fit so there wont be need to create template override again
To view the template folder structure, Please view documentation excerpt wherein, ACM folder can be seen under \templates\ja_fit parent folder
Right approach to isolate template customizations
1) Copy the acm folder from here - \templates\ja_fit\acm
2) Paste the folder above to \templates\ja_fit\local which will be \templates\ja_fit\local\acm then using similar instructions as outlined here [Create local folder if doesnt exist]
3) Thereafter, You may make relative changes in specific isolated files in ACM style folders seen under \templates\ja_fit\local\acm for specific style, as needed
Hope this helps in deriving the purpose as envisaged due to salient feature, Template isolate functionality through T3 framework provides 🙂