How to train the model and test on unlabelled data set

I am not getting what should be the data path ex if it is gru model and the configuration file is area_1 then which area's path should be places in data path and what should be the corresponding test_set, also can we specify more than 1 test_set, if yes how? How is the data split for train and validation and how to test the model on unlabelled data set?