Once you have compiled and installed Orchids, you can tune the way it behaves by editing configuration files.  They will be in /usr/local/etc/orchids/, assuming Orchids was installed in /usr/local/, its default location.  Let us create a shell variable for this:

export OCONF=/usr/local/etc/orchids

The configuration files are:

• The general configuration file $OCONF/orchids.conf
• The list of modules that Orchids loads on startup, $OCONF/orchids-modules.conf
• Module-specific configuration files, $OCONF/conf.d/<module-name>.conf
• The list of input sources, $OCONF/orchids-inputs.conf
• The list of rules (signatures) that Orchids will monitor, $OCONF/orchids-rules.conf

If you wish to create a package, you should change $OCONF to something more relevant, and you should also edit the .conf.dist files, not the .conf files.  See the package building pages.