Create website shortcut to desktop option isn't in Firefox
When you go to More tool in Right upper corner, couldn't find it
It helps to put Website URL in form of Desktop shortcut which can only be open with firefox browser.
We can set 'Task Scheduler' by selecting target option in properties section
Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.
Just to better understand your request, is this idea similar to what you're looking for: Desktop Icon - Create a shortcut icon on your desktop for any website?