No one wants to plunk their tooshies directly onto cold, hard porcelain, and if your bathroom environment lacks certain creature-comforts then your daz characters may find it difficult to smile convincingly.
Fortunately, there's a better way!
This is a separate toilet seat prop. You can open and close the lid and the seat itself using sliders in the Parameters tab (General > Transforms) to open and close either the lid, or the seat and lid together.
Simply load the prop into your environment, and position and scale it to fit your uncomfortable seat-less toilet. Voila!
Do your characters a favor and increase their bathroom comfort level by using the toilet seat prop today!