I want to change one of my field from required field to not required field (for specific Page Layout) and I tried the next process (Go to Your Name | Setup | App Setup | Select the object you need to change the field on | Page Layouts | Click edit next to the specific page layout | go to the field on the page layout editor and select the wrench icon ) but I can not uncheck the checkbox for required field, the field is grayed out.
Any idea how to do that in other way (without changing anything on field in Object but only on Page layout)?