I suggest you to make a MainForm on CreateUser table, and Subform1 on Login table, and Subform2 on Profile table. In Login table and Profile table add a field UserID1 and UserID2, (number, long) as
foreign key, and link them on UserID (primary key in CreateUser table). Subform1 and Subform2 put in MainForm, and link them via UserID -> UserID1, and UserID -> UserID2 (via "Link Child Fields", and "...