Is there a method to do something like have on tab entry programming? 

A very basic example of this need is a 5 tab element containing telephone numbers. You have a tab marked Home, Work, Cell, Fax and other. If you are doing Data entry each time you press the tab you have to then click the layout element to give focus to it so you can enter the data. No Le seems to get focus when a tab is selected not even the first element on the form.

Is there some mechanism that would allow me to use something like goto le on tab entry .

My solution around this was to set up a separate order entry form without tabs, It works  but it is not very elegant and only useful if you are planning on doing lots of data entry.