Hey, thanks for submitting this feature request. I believe this sort of exists already. The station I’m volunteering for, WPVMFM.org, has a master schedule with a filter on it: https://wpvmfm.org/schedule/
I will ask the developer if he did this or I’ll ask the original plugin developer if she did it and report back.
While it doesn’t “filter” in the true sense of filtering OUT other objects and only leaving the shows categorized as “sports talk” or something like that, it draws a box around the shows in the category.
What could happen in a future version is setting a reduced opacity overlay over boxes that are NOT the category selected, which might be a better user experience. There is a way to to do Tabbed schedule, which there’s a tutorial for, but then I’d have to make sure that the filter works for the master schedule AND the tabbed schedule.
Please note that I am not a developer. I’m a product manager and project manager with three decades of software development and project management experience interested in terrestrial and internet radio and working to provide this solution to everyone for free, as well as to add new features in a PRO version down the road.
That being said, I’m am actively seeking out development resources to contribute to the project. I have a few folks interested already and am hoping to get some developers on board the project in the coming weeks. I have posts out to Facebook groups, pushing messages out on Twitter, and trying to corral some help through LinkedIn. At this point, I cannot guarantee anything until I get that sorted. And, the first order of business will be a security check and updating the plugin to work with the latest version of WordPress, so that means adding Gutenberg support too. It’s going to be quite a bit of effort to guide this project from its current state to support all the new stuff that’s happened since the last update in 2015.
I just added this request to the Issues tracker on Github here: https://github.com/netmix/radio-station/issues