Multi-presses are tiles that involved you hitting multiple keys on your keyboard at the same time. (RIP one-button rhythm game). A good example of this gimmick being played is on the official world RJ, where the blue tiles represent two key presses into one tile.
📝World RJ - Fear Grows, video by Nichipe
How to create a multi-press tile?
Let's start by indicating which tiles will represent our multi-press tiles. For this example, we are coloring the tiles with blue. But the format you choose for this gimmick is entirely up to you
Editor - Multi Presses build
Click on the tile you want your multi-press to happen, you will notice a bubble for "custom angle" on the right corner. Click that.
Editor - Angle Input
Here, you have two options. A Bubble for regular tiles and one for mid-spin tiles. For this example, we will be using the mid-spin option. Let's insert the value 0.01 into the text box and click the mid-spin bubble.
Editor - Insert value angle
A mid-spin tile will be created. 0.01º is the lowest angle possible inside the editor. But in beats, is 0.0000555555555556 of ONE beat. This is such a small value that we can not play it as a separate hit note, which makes the gimmick of two keys hit a reality for the game.
Editor - Mid Spin Add of 0.01º
Since we associated the color as our multi-press tile, let's use Position Track to hide the mid-spin note, turning its opacity to 0%
Editor - Position Track into 0 Opacity
Now you just repeat this process over all your desired tiles. Look how all the mid-spin tiles are set and hidden from the player's view now.
Editor - All mid-spins are set as multi-presses
Editor - Multi-press hit validation
Congratulations, you have now created a multi-press level!