You can insert a kitchen or bathroom sink into a cabinet that you have inserted in your drawing by simply pointing and clicking. The sink automatically snaps itself into place at the center of the cabinet top.
To insert a sink into a cabinet:
Select Insert
> Interiors > Plumbing Fixtures, or click the Plumbing Fixtures
button on the Interiors toolbar.
In the catalog, select the Sinks category, then select the sink to insert.
Position the fixture inside the cabinet, then click to insert it.
Right-click and select Finish.