How do you simply delete the user defined label templates???

Layout - Page Setup - Label - User Defined ( How do you deleted these???? )  Every time you make an adjustment to one of them it forces you to create a new one and you can not delete them.

Guys,  Can someone please help us or suggest where we can get some help?  This program is perfect for creating labels except for the way it forces you to create a new user defined label template every time you update one and refuses to allow you to delete it.  There must be a folder this information is kept in.  Thank you   Layout - Page Setup - Label - User Defined ( How do you deleted these???? )