Can you explan the structure of your database? It's difficult to tell what the problem is without knowing what tables and relationships you have. Also, what version of FileMaker are you using?
when I select the first line it doesnt go to the next portal row, it goes to another field.
By that, do you mean that when you press a key (return, enter, tab) to exit a field in the portal row, it does not go to a field in the next portal row?
If so, then enter layout mode and select "Set Tab Order..." from the layouts menu to see and modify the current tab order for your fields and buttons on your layout.