Choose the folder to save the predicted soil property map(s) by clicking on 
.
A dialog will appear for you to create or choose output directory. Choose or create a new directory to host the output soil property map(s), click on "Ok" , the selected directory will appear on the "Save the predicted soil property maps to fold" text box.
Specify uncertainty threshold in the corresponding text box. The default threshold is 0.5. Note the value should be between 0 and 1.
Specify where to save the uncertainty file by clicking after the uncertainty file text box.
Click on "Execute" to start the inference process.
If inference is completed without error, in the folder you just specifed you can see the soil property map(s). You can also see the uncertainty file in the path you specified.