RE: Use of Properties if Tables In AX 2009 & 2012.

here are answers

1. Title field 1 and 2 appear in look up and on form top bar .

2 & 3. Both used fir security purpose. config key to enable /disable functionality . Security key to enable disable access to particular object

For all indexes

msdn.microsoft.com/.../hh812105.aspx

For formref

community.dynamics.com/.../formref-and-go-to-the-main-table-form

All of these can be created and changed in AOT