A-chassis Automatic

I want to convert the gear function of a-chassis to automatic. I don’t know where to change Can you help me?

In the settings, it has a part for transmission modes. You can change this to your liking, but the table should look like {"auto", "semi", "manual"} or something similar. If your table already contains “auto”, make sure it is in the front of the table.

Auto already exists in the table, but it does not work.