Some of the larger clinics that use Smart Flow Sheet have several doctors attending to several patients. Currently, the best way to organize them is to assign a color to the doctor and color code your patients as shown below:

First, choose the patient, enter the edit mode and then choose the 'edit info' button.

Once you are in the patient edit mode, you can select a color for that patient. There are several pre-selected colors or you can use the eyedropper to make your own color. 

Now the patient has their own unique color.

Here is how it will look on the whiteboard: