5250 / CAE display file vertical cursor movement

[Antonio Fernández-Vicenti <afvaiv@xxxxxxxxxx>]

I've got a display file. Its record, a normal one, has a number of 
fields, each corresponding to a data field for a given month.
There are a total of 18 such fields (for 18 months) .
For some reasons I have to display these 18 fields as 1 and a half 
column. I mean, 12 consecutive months in a column, the next 6 in a 
different coulmn, aside the first one:
xxxxxxxx           xxxxxxxxx
xxxxxxxx           xxxxxxxxx
..............
The problem is, after entering data in any of these fields, cursor will 
move horizontally to the right, then down to left next line, again to 
the right, etc.
I'd like to have cursor move (or TAB, if that's the case...) vertically 
through first column, then up to top of second column, then downwards 
2nd column...
I know that for right-to-left languages like arab, there is a CHECK(RL) 
or (RLTB) keyword, but this is not my case...
Have also thought of using a "horizontal" subfile (keyword SFLLIN), but 
this will not help either.

I'd like something similar to RLTB (above) but just for the TopToBottom 
part of it...

Does anybody know of any way to manage cursor moving top-to-bottom 
between fields in a display file?
Of course, we're using CAE V4R5.

TIA
Antonio Fernandez-Vicenti