Whether Railway allow candidates for distance education while je training

Sir , I selected for je in scr recently . I am interested in pursuing pg course . How much time will railway take for calling medical and to start training course ? Am I allowed to study distance mtech education next year while I am in training of je?? I have counselling in few days for pg education . Will I go for counselling or not ?? If I join college in middle I have to leave because of railway training . Please suggest me .