Add ACL terminal – macOS

Read only:

chmod -R +a "<username> allow readattr,readextattr,readsecurity,list,search,read,file_inherit,directory_inherit" <folder>

Read and write:

chmod -R +a "<username> allow readsecurity,readattr,readextattr,list,search,read,execute,writeattr,writeextattr,delete,add_file,add_subdirectory,delete_child,write,append,file_inherit,directory_inherit,inherited" <folder>