In some colleges affiliated to the uptu you get a chance to get your branch internally slided which is known as internal sliding in this after the counselling and spot rounds are over then also if some seats are left in that college then it will organize a round of internal sliding for those students who have taken admission in that college so you get your branch upgraded on basis of your rank(either upcet or jee which ever is applicable) it is somewhat like branch change but is conducted just after taking admission within few days now regarding the colleges which conduct internal sliding then you will have to enquire this my contacting them as no information is available on the sites of colleges you have mentioned