ooo sorry i misread your post.
ot sure witch step you need help with so this is the whole process
unzip the plugin
copy unzipped folder
paste here <install path>\exporters\html5\plugins
double click layout orrightclick add newobject(same as you would to make new sprite )
the plugin will be listed somewhere in here click it to add just like anything else.
it is now available to use in your project and will be listed when makin new events/actions just like anything else
hopefully that is what you where looking for