Start of with a area
Press on the Fence tool and place like this
Then 2 beds
Put another 2 fences on top of each other like so
And the same with the rest
Then place 4 wood blocks like this
Add 2 more apron top of each block so they look like this
Then do this
Add another 2
Add 2 more beds on
Now, look at these. We don't want these 2 blocks because we can't get on the beds underneath
Get rid of them!
You can take these away if you want. I only took away the middle blocks
There's your double bunk bed!