printing out application forms

[imagine]

when printing application forms ,to be filled in and posted,
what is the correct way if there is more than 1 page,

do i print both sides , page 1 then page 2 on the reverse of paper,

or 1 page per sheet leaving the reverse side blank?

[stevewool]

i always print 1 page per sheet on any documents never using the reverse at all

[imagine]

and no problems when received by any legal departments, just trying to figure the proper way or if either way is acceptable,
its something i have done before