Another way to create wainscot for walls is to utilize the railing tool.
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Walls
257 - Extend Siding Over Foundation Slab
261 - Offsetting Deck Railings
415 - Creating Wainscotting Using Railings
5 - Drawing Walls
5422 - Editing Walls
5230 - Railing Walls
5220 - Room Divider Wall Type
5312 - Interior & Exterior Wall Defaults
6122 - Foundation and Bearing Walls
2429 - Shower Wall Types
2435 - Adjusting Pony Wall Display in Plan View
368 - Creating a Dynamic Wall Legend
825 - Create Wainscoting Using Cabinets
404 - Design Wainscoting for Walls and Stairways
5317 - Multiple Wall Framing Layers
40 - Wall Coverings
5454 - Creating a New Wall Type with a New Material
5455 - Creating Pony Walls for Above Grade Brick
402 - Stepping a Foundation
Stairs
71 - Stair Basics
5452 - Stair Landings
409 - Detailing Stair Headroom
381 - Display Newels, Balusters, Railings and Stair Breaklines in Plan view
392 - Aligning Stairs Across Floors
406 - Adding Glass or Cable Rail Panels to Stairs
262 - Offsetting Stair Railings
410 - Creating Deck Stairs with Mitered Corners
390 - Stair Wall Options: Partial Railing, Wall under Stairs, Stairwell
375 - Stair Tread Depth, Automatic Treads, Lock Treads and Set Stair Heights
379 - Customizing Stair Landing Shapes
394 - Creating Winder Stairs
271 - Adding Stair Fittings
387 - Creating a Wheelchair Ramp
198 - Creating an Escalator
196 - Creating an Elevator
388 - Drawing Curved Stairs