I have a table with several "brands" outside the umbraco tables. I want a way to link pages to specific brands. Currently I have a text field in the document type I am entering the corresponding brand ID. then in my surface controller I do this

var BrandsPage = Umbraco.TypedContent(1208);
var umbBrands = BrandsPage.Children;

var umbBrandPage = umbBrands.FirstOrDefault(x => x.brandID == brand.BrandID);
 brand.Link = umbBrandPage.Url

This is working fine, I would like a more elegant solution, but that is not really what I am looking for here. What I would like to do is hide that BrandID field when content users (besides admins) are editing content. I haven't found a way to do this with Umbraco "Out of the box", if there is that would be awesome, but if not is anything I can do to extend Umbraco to allow functionality like this.