yes i have only mdashboard installed in my system
What exactly do you mean by that? If you have multiple devices connected to one node-red instance then each one can show any of the dashboard pages.
Suppose one client(screed) wishes to see 10th sensor. all client will see the 10th sensor.further all textfield entries will reflected in all screen
That depends how your pages are designed, if you have one for each sensor then no. If you have a mechanism that selects a sensor then shows that one in one page then yes.