Roof railing for Opel Zafira Life with panoramic roof

I hope someone can help me. Friends of ours have ordered a Zaira Life and a roof rail, which they have simply mounted themselves. Unfortunately, when looking for such a rail, I always insist that they are NOT suitable for mounting with a panoramic roof! Why? The friends of course have NO panoramic roof! I’m extremely irritated by the ground roof beams from Opel, they are hard to attach, especially the threaded clamps ruin my paint, but I want to leave it on. e also not, since I fear that they rust. With a roof railing the assembly would be much easier! Does anyone know if there is such a thing for panoramic roof?