Win10 Presets usage?

[pike2k]

According to readme: "A preset is specified with the -p option, followed by the path to a preset file or a preset name. A preset name is the filename of a preset without the directory or .ini file extension; rsgain will search the default preset locations for the file based on your platform:"

When I run:
"\rsgain-3.6-win64>rsgain.exe -p pike
[FAILURE] Unrecognized option 'p'"

So how are we supposed to use presets?