This tablet is tactile. Imagine that you only have your fingers and the stylus (both tip and eraser) to interact with it.
The left panel shows the state of the interface where you are. The right panel shows the state that you would like to reach.
Use your fingers and/or pen directly on the left picture to show us the action(s) that you would do to trigger that effect. It is up to you whether you perform the gesture using one hand, two hands, the pen only, etc.
For the sake of the experiment, your gestures will leave colored marks. Please try it.
If you notice some conflict with a previous action that you proposed, you will have the opportunity to propose another action in the next round. If there is no solution that you find good enough to solve the conflict, just mention it to the operator.
In all cases, don't hesitate to share your opinion and thoughts with the operator. Any kind of feedback is welcome. There is no single correct answer or universal truth. It is our job, not yours, to propose the best interactions. Your input will help us in doing so.