Unlike sinks that just drop into an existing cabinet, an apron sink must be placed separately. An apron sink, which has a finished front surface that extends past the counter, can be placed on top of a base cabinet against a wall, or in an island, by following the steps below.
To create an apron sink base
Begin by opening the plan you would like to create an apron sink in and select Build> Cabinet> Base Cabinet from the menu. Click in your plan to create a base cabinet.
Using the Select Objects tool, click on the base cabinet to select it, then click the Open Object edit button to open the Base Cabinet Specification dialog.
On the General panel:
Decrease the Height of the cabinet so that the sink can be placed on top of this cabinet, while the top of the sink will still line up with the cabinets on either side of it. In this example, we chose a Height of 26 1/2".
Set the cabinet's Width so the cabinet is large enough to contain a kitchen sink. In this example we will use a 36" wide cabinet.
Change the Countertop Thickness to 0".
On the Front panel of the Base Cabinet Specification dialog, click on the drawer in the cabinet preview diagram on the right to select it:
Click the Delete button within the Base Cabinet Specification dialog to remove it, leaving only the double doors.
Click OK once you are done editing your cabinet to close out of the Base Cabinet Specification dialog.
Select View> Library Browser from the menu to open the library and browse to Architectural> Fixtures> Sinks> Kitchen Sinks> Apron Front and choose the appropriate apron front sink.
Once the fixture has been selected, click once on the modified base cabinet to place the sink on top of the cabinet.
If the sink is not placed correctly the first time, you can select the sink and move it by first clicking on the cabinet, then pressing the Tab key on your keyboard to cycle to the sink fixture.
You can now adjust the width and height of the apron front sink accordingly until you get your desired look.