Hello
If it is the same machine used with both profiles, the simple way is to copy/paste your actual profile. In the bottom right corner of the Mach3 screen, you can see the name of the profile you're using ; example, on this picture, it is called "Mach3Mill"

Go to your Mach3 root folder and search for a file called Mach3Mill.xml (maybe you will need to activate the files extension display in windows to see the ".xml")
Copy/paste this file and rename it, for the example, we will call it "myprofile.xml"
Now, if you run Mach3 through the launcher, a new profile myprofile.xml will be displayed in the list. All machine settings are of course the same than for the source profile and you can only change the settings you need.
If you want a desktop icon to be able to run this profile without to use the launcher, creates a shortcut icon for Mach3(*), then right click on this icon and edit the "target" box.
by default, this box contain:
C:\Mach3\Mach3.exe (this will run the launcher with the profile list)
change for:
C:\Mach3\Mach3.exe /p myprofile ; this will run Mach3 with the "myprofile" profile. (don't forgot the space between
Mach3.exe and
/p)
(*) to creates a shortcut, go to Mach3 root folder, locate the file
Mach3.exe, right click on it and select "send to/desktop (Create shortcut)"
++
David