Using Storyboard Pro on an iPad

Connecting the iPad

Connect the iPad to a Mac laptop with a USB-C cable.

It's possible to do this with a basic USB-C cable.

iPad Pro 4th gen has a USB-C connector, so a thunderbolt cable won't a make a difference. The current iPad Pro's connector is thunderbolt/USB 4.

It's also possible to use the iPad as a secondary display without a USB cable, but I'm not sure if it's possible to invoke Sidecar wirelessly.

Make the iPad a 2nd display

On the Mac, System Settings > Displays > click the + drop down > select the iPad from the available devices.

This will open Sidecar on the iPad, which will basically display the Mac desktop with some modifier keys on the side.

Running Storyboard Pro

On the laptop, open Storyboard Pro, and open a project.

Click and hold the green button at the top left of the menu bar of the SBP window. Select Move to [iPad name].

With the SBP stage on the iPad screen, it's possible to draw with the Apple pencil, albeit it's a little laggy, at least using a basic USB-C to connect the iPad to the laptop.

Closing the connection

Move the SBP window back to the laptop by clicking on the green button again > Move back to Mac.

Hide Sidecar by swiping up.

Close Sidecar on the Mac with System Settings > Displays > + dropdown > Select the iPad from the list of devices to uncheck it.