How to hide work order header flexfields

Summary:

I´m triying to hide flexfields deployed for maintenance work orders using page composer, but I couldn´t find a way to hide it.

Content (required):

The flexfields shown in the picture were deployed for maintenance, so I understand that these flexfields are flexfields in common with maintenance but I´m wondering if it is possible to hide this DFFs (except the first one) only for the manufacturing work orders.

Already tried with page composer selecting the DDF name and didn´t deploy the edit component option. Also, using the structure modification tool and it didn´t let me modify permissions to make invisible the desired flexfields. I only can eliminate all the flexfields yet this is undesirable.