Please update to b408 (the latest release), standard PC modules should be recognized correctly in French.
Defining own filters is for non standard PC modules. Standard PC modules are pre-defined (not with all locales, but with French now).
* The first field is plug-in name for use in AZ Controller. It can be the same as in other definitions or build-in definitions (f.e. EQ), AZ Controller think it is the same plug-in then (f.e. with different localization or version).
* in the first combo you need to select exact number of plug-in parameters. That is not obvious to find. Hint gives "automations" in the track view, but there can be some not automatable parameters.
* the next is name and number of some parameter (to distinguish plug-ins with the same number of parameters). So, the parameter should be more or less unique. Cakewalk API is pre-unicode (while AZ Controller itself is unicode), so all non ASCII characters (f.e. French special) should be replaced with '*' in the name.
But I repeat, you don't need to define filters till you want construct your own presets for extra PC modules.