Hello,
You have an incomplete setup. Did you run the mbd_imxrt_path.m script (that is placed in the toolbox installation folder, in the root). W
That script will create the NXP targets for your matlab version, the output of the script should look like this:
nxa11767_3-1619592127058.png
You should see in the log that the target was created. If you did that and the target was not refreshed then run the script mbd_imxrt_create_codertarget from command line (you should have it in matlab path if you run the above script)
nxa11767_4-1619592528691.png
After refreshing the target, you should see something like this in hardware settings when selecting a NPX hw board:
nxa11767_0-1619591333963.png
Best regards,
Alexandra