How to delete a custom filter

(AIO64-5.1.4-1 on Windows 10)

This has to be something simple I am just overlooking. How do I delete one of my custom filters? I have looked in the Wiki and here and cannot find the way to do it.

Open the window with your list of custom filters. Menu >> Edit >> Filter Editor.

Select the filter to be deleted, To the right, there will be the minus sign (-)

I knew I had to be overlooking something simple! thank you!