R,S Configuration of asymmetric carbon atom when group priority 3 and 4 are not on wedge bond?
To do this, Put the lowest priority group as far away from you as possible.

In the 1 example, if I look at 4 from between 1 and 2 it would be farthest away from me. And i will see that the 3 group is on top, 2 on my left and 1 on my right.

And now if i move from highest priority group to lowest (1-2-3) it would be in clockwise sense. So the configuration is R.

2nd and 3rd example has S and R configuration respectively.