Djinn teleports units from a remote place to the djinn.
1) have djinn at the end point.
2) select djinn and press 'd'(alternatively search the orders UI for a blue spiral thing unique to djinn).
3) select a clear start point for the entrence. Left click to place. Know that there has to be a stardust sized area clear.
4) let the djinn channel for a couple of seconds(do not give any orders to the djinn)
5) given everything done properly (keep the area clear) a lamp should be placed at the start after the channel.
6) select the units to transport, and right click on the lamp. It should give a context order to teleport from the lamp to the Djinn.
Test and tell me if this is a good description.
