How to disable field or metafield for seller

Add this code in hooks for seller structure

function (req, res, next) {
    if (req.session.user && req.session.user.isLoggedIn && req.session.user.role == "seller") {
        if (res.data && res.data.fields && res.data.fields.length) {
            res.data.fields.forEach(function (field) {
                if (field.name == 'metafields') {
                    field.fields.forEach(function (metafield) {
                        if (metafield.name == 'seller_role') {
                            metafield.settings["disabled"] = true;
                        }
                    })
                }
            })
        }
    }
                next()
}