If the columns field in the screen layout ( IN, OUT, Sales Order or etc) are incorrectly being rearranged, the user would be able to reset them to the default layout.
To reset the layout:-
1. Go to Settings -> System -> Operation Setting
2. Click on the Layout and Cache Management tab as shown below:-
3) Click on Reset Screen to Default Layout.
4) Once the message ” This will reset all your screen layout to default, it only affect the current logon user. proceed?”, click Yes.
5) Now the screen layout will be reset to the default layout