You should use standard A4 paper size for your submission. The entire document should be in Times New Roman font. Recommended font sizes are shown in ...
https://www.unlv.edu/sites/default/files/page_files/27/GradCollege-Manual-FormattingRequirements.pdf
However depending on the document
Type 3 fonts must not be used. Other font types may be used if needed for special purposes. Recommended font sizes are shown in Table I. B. Title
Set font size. Default. [letterpaper][a4paper]
Times New Roman and Cambria are the default fonts for Microsoft Word and 12-point font is also the default setting for font size). Alignment. The text of your
A4 paper size: side = 13 mm; top = 19 mm; bottom = 43 mm; columns–single = 184-mm width period + text) (optional) standard one column or two columns.
(c) The paper size should preferably be A4 viz. The minimal recommended font size is 12 points
The paper size should preferably be A4 viz. 210 mm x 297 mm or 8 1/2 by 11 The minimal recommended font size is 12 points
Dec 20 2011 promotional materials; revise list of standard fonts; ... PDF/A; clarify embedding of fonts and font size in.