I set up a form and used it as a dialog box. I set up the tab order as needed. The dialog box has three text areas and an 'OK' botton at top.
When it runs the focus goes to the first text box tabbing from there goes to the OK button, and back and forth. I have to put my mouse pointer on the second and third boxes to fill them out.
Each text bax has it's own tab order set, top one = 1, middle = 2 and thrid = 3