Hide/unhide fields in info types

I wish to hide/unhide fields in an info type on the basis of Applicant Group and Applicant Range. I am unable to use the fields of Applicant Group and Applicant Range in the Feature. I am trying to customize through the "Change Screen Modifications" screen in SPRO.

I am able to do this if I go to Info Type Screen via PB40 but thru PB30 I seem to be helpless.

If you go to Table T588M there are several infotypes which allow you to hide/unhide fields. I hope that helps, if not I will take another look into the config.