Simplify Cuves - Addon

I’ve enabled the “Simplify Curves” addon and attempted to invoke it through “Search” (spacebar).

For some reason, it does not show up.

Can anyone let me know why this is?

When you open the file at below link, you’ll see that I’ve isolated one channel.

If you can simplify the curve using the “Simplify Curves” addon, please let me know how. I don’t seem to be able to even invoke it despite enabling it via “User Prefs”.

Thanks in advance.