Hi brian terrien

Do you mean
1 - how to add texture?--> set the little man with the right elevation, according the walls elevation (positive or negative)--> go inside of the room--> texture
2 - How to set the materials? --> Right click on the wall--> Framing properties--> In the Framing Tab you can set some settings and add other elements--> In the Estimator Power Tool, you can set the spreadsheet with the materials

Patricia