This is by far the trickiest level of the game so far. You are introduced to another movable creature/object which you'll nee to utilise to help you complete each level.
The first part is easy, hit the first marker, then wait for a staircase to drop to allow you to exit this part of the level.
Slide the blue column so you can walk onto it, then take it round ot the over side and line it up with the bottom dark grey square so Ro can walk off the blue column and onto it, you'll then need to walk down the stairs, move the blue column out of the way and go through the door.
A new section appears. Move the blue column to the yellow and red square.
Next part... Move the blue column so you can get to the button, walk onto it then move the blue column to the other button.
This part is more complicated. Move the blue column to theblue square closest to Ro, rotate the section so a bridge is formed, walk Ro over to the other side, move the blue column to the left grey circle so Ro can walk onto it.
Move the blue column with RO on top of it to align it with the yellow and red square, walk Ro onto it to complete this section. The accompanying video visually shows you how this is done.
Now walk up the stairs, fit the blue column into the space so you can lift the monument, and walk into it.
This next red section is little more tricky, please see the accompanying video for how it is done.