[Question] How to use DriveBase

[DMB-rgb]

Describe the bug

Trying out: ('ev3', '4.0.0b8', 'ci-release-94-v4.0.0b8 on 2026-03-19')
In the graphical display clicking on the left or right oval does not allow me to update the Port it should be connected to.

To reproduce
Add ev3 to setup and add drive base. Try setting left and right motor and it will not let me.

Expected behavior
I expected to be able to select Port.A and Port.B from the drop down but no drop down menu appeared.

Instead I get a pop up box ! Click to set up. And regardless of what I click I do not get any further.

Screenshots

[BertLindeman]

Before you can choose a motor, that motor must be setup. So add the motors before the setup of the drivebase.

[laurensvalk]

Here are examples of doing that: https://pybricks.com/learn/making-programs/your-first-program/