It depends of the material of your ceiling.
When you are out camping, connect the rope(s) to a bench (no need to drill).
When you want to use the mosquito net inside and you have a wooden ceiling you don’t need a drill.
When your ceiling is made of stone/concrete, you need to drill holes.
For a conical mosquito net you only need one hole.
For a rectangular mosquito net for a single bed you need six holes.
For a rectangular mosquito net for a double bed you need eight holes.
When you buy an EVEN Naturals mosquito net, you will get a free eBook that includes instructions.
In short: make a hole of 5mm, put the plug into the hole and then turn the hook into the plug. Connect the rope to the mosquito net and the hook.