To Reset the Pattern Code: 

Go to the Settings App and scroll down to find EMDRTherapyPlus.  Select it and then enable the reset.

Set the Pattern Code:  The first time the Patients tab is touched brings up this screen.

Select at least three buttons in a pattern that you will easily remember.  (Touching a blue button will make it white again.)

Touch Enter

Verify Your Code:  Re-enter your Pattern Code and touch Enter to verify it.  If it does not match the original pattern you will return to the initial screen above.

Enter your Pattern Code whenever asked to gain access to Patient records.