The default profile for mach3mill is saved in an XML file
Mach3Mill.xml in he c:\mach3 folder +all related macros in c:\mach3\macros\mach3mill
Save a copy of the XML file and macro folder somewhere.
When you create a profile named "tangential"
you will have a tangential.xml and a folder c:\mach3\macros\tangential created
You may have to copy some macros from c:\mach3\macros\mach3mill to the c:\mach3\macros\tangential folder.