Plex Library Filters

I have an issue creating a new filter in the dropdown section of music All Section
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I’ve created a filter for Boxsets-Album before and I want to add a new category/filter
but I can’t for the life of me figure it out, I want to add FM Broadcasts to this list and maybe a couple of other things
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I’ve added the “FM Broadcasts” to the Collection part of the individual album but I can’t seem to get it to show up in the dropdown for the part above

You are filtering Artists.
You need to switch the library view mode to Albums, in order to filter by Album collections.

Or you go directly to ‘Custom Filters’ and select ‘Album Collection’.

Brilliant, it’s been so long since I’ve done that, I forgot. Thanks so much