1. Click on floor assembly above pkpm.

2. Then click Floor Assembly on the upper left.

3. Then select the standard layer, enter the layer height, and select the number of layers.

4. After selecting, click Add below.

5. After all standard layers are added, click OK below.

6. Now click on the entire floor in the upper right corner and click OK.

7. Finally, we can assemble our graphics in pkpm.