How to use a trained neural network in GUIDE?

I trained a convolutional neural network using the pre-trained network ResNet50 for medical image classification. Now I want to create a user interface in GUIDE where a user can upload a picture of a skin tumor and the net will classify it and return the label for the image. My problem is I'm not sure where should I put the network in the interface code. I am using axes for the image and a push button for the upload function, and I was thinking of using another push button for the classification.