There are three places to adjust the end frequency depending how you want the filtering to be done, as said above the window lengths and exponents would be quite different.
Usability often has as much to do with familiarity. A GUI can help as all the options are exposed but anything worth using will be too complicated for some.
I recently made some filters for another member and had forgotten how to do it myself, small amount of head scratching and it all came back to me
MPEndFreq
EPEndFreq
ISPEEndFreq
Both EP and ISPE need to be adjusted together to avoid DRC erroring.Usability often has as much to do with familiarity. A GUI can help as all the options are exposed but anything worth using will be too complicated for some.
I recently made some filters for another member and had forgotten how to do it myself, small amount of head scratching and it all came back to me