Although the thread is nearly a year old. I have a machine with the same "feature". If the toolmagazines entry is inside the cabin then you can do nothing. Some machines have an separate Toolchanging door. With this, you can change tools, while the machine door is closed, but I don't know if the program can be run while you do this. I fear no, because, if the machine needs a new tool, you have blocked the tool turret or chain.

The only possibility I see is, ignore the safety rules and have the door electrically always closed, but remove the doorlock mechanically.

But in this case you can never change a tool by hand from and to the spindle.