With a suspended ceiling there are in fact two places where you can place a suspension hook using a magnet. At the intersection of the frame or on the intermediate piece. For the first situation there are a few round magnet attachments and a number of elongated ones for the intermediate pieces.
In addition, GeckoTeq even offers the option of attaching other suspension elements via a screw thread with one of the round magnetic attachments.
Do not forget to look at the maximum load of the suspended ceiling, especially if several magnets are placed together. With slightly heavier material that is hung, an undesired point load is created.