If you ordered the Full kit with triple stand included you will find the triple stand inside the Moondrop ''Mars'' package under the protective sponge. 

To make the triple stand as one whole unit you should take all three single stands and place them into the holes of the triple stand. Use the gel pads (included in each Moondrop package) to attach them firmly. 

If you want to use one of the single stands separately again you can reattach them with a bit of force. You can find the instruction how to reattach the stand on ‘’How to use gel pad’’ section.