To hide fields, Goto Setup >Admin Settings >Field level security >select the module > Profile Now, check/un-check the fields that would like to show to the Support Agent associated with that profile and save the settings. For more help refer, Field ...
You can hide fields using Field Level Security. Goto Setup > Admin Settings > Field Level Security Select the profile name, module and uncheck the fields you want to hide and Save. To create Profile Goto Setup > Admin Settings > Profiles > Add New ...