Grid without camera


I have a need to create grid flight plans for polygons (no problem so far) but I do not want to have any camera settings or trigger. I just need to be able to create the plan, manually select the distance between flight legs, altitude and speed, but this will be flown without a camera. I can change these settings now, but any time I make another change, the distance between legs changes back to the default for the camera setting.

Is this possible?

change the camera to blank
then you can do whatever you want

How do you change the camera to blank? I cannot see how to do that