In the camera view, your hand should be over the block and then push blocks around to move them. You must hold a certain button in order to drag a block. Here are the numbers you need to hold: 1) wood 2) brick 3) door 4) stone 5) other brick 6) other wood 7) other stone 8) other door Sensitivity of 5 recommended
Please put ways to make this better in the comments. :| Btw this is for school.