These two elevators are side-by-side in the same building. Note that only Elevator 1 goes to the Cellar (C) or the Roof (R). I have two complaints about this.
1: If you want to go to the Roof or the Cellar, there is no way to specify which elevator you want. So half the time, you will get Elevator 2 and have to send it away & call again for Elevator 1.
Exception: If you are on the Ground Floor & press the DOWN button, or on Floor 12 and press the UP button, only Elevator 1 will respond. Whew!
2: The two sets of buttons are arranged very differently. One has three columns, one has two.
This is a residential building. So whether you live there or you’re visiting, chances are there is one floor you go to most of the time. Let’s say it’s 6. In one elevator, your button is three down from the top of the left side, and in the other, it is four down from the top of the right side. Every time you get in the elevator, you have to expend some mental energy to find your button. If they were arranged the same way (with the addition of two buttons in Elevator 1), your finger would head to the same location for the six button with no thought at all.
Suggested button arrangement:
