Communication Sites Search Default Result Source
I am using the Communications Site as my company intranet homepage. We have many subsites. When using the search box, users are confused as no results show. Only after going to the results page, will display the option to change the result source to "All Sites" where previously on a regular home page was an option for "Everything" within the search box. Is this possible to change, to allow selection of a result source from the search box on the Communication homepage?