how to make a DFF mandatory in Additional info in a specific document in Redwood

Summary: We did a customisation on the flexfield, with LOV's, so that it appears only in a specific document in Performance (in Additional info), with EDS. This field has been made mandatory based on the document Responsive_Steps_to_make_DFF_mandatory_in_responsive_PD.docx, with Page Composer. Is all this possible in Redwood ?

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