The width of the columns in PDF Layout of a form can be adjusted by customizing the form.
CUSTOMIZE> CUSTOMIZE FORM> PRINTED FIELDS> COLUMNS
Here we can choose different fields want to be included in the column of PDF Layout. Width and label of the column for that field can be adjusted there.
If we want to remove standard Fields of a PDF Layout on printing.
Customization> forms> Transaction PDF layout> Select the PDF Layout
from the Selected Element select the field make its width and height as 0
Save