You could have different classic99.ini files. Rename as you need them.
Or you could have different directories, each with a Classic99 installation (footprint is (can be) relatively small).
Thanks, those are great ideas. I can say I never once opened up the c99 ini. I should probably read the docs for it as well. That might very well be all I need.
You could set up a single “profile” or “ini” folder under “Classic99” and each time you change Classic99 parameters (FIAD folders, DSK images, current cartridge, ...), exit Classic99 and copy “classic99.ini” to a new or existing INI file in the “profile” folder, with a name that will remind you of its configuration. You could then set up a Windows script file (batch file) that you would run to allow you to choose which configuration profile to copy to the Classic99 folder before the script starts Classic99.