To change the text in any field to be all bold, all italics, all underlined or all capital letters, select the text box on the menu design area.
For menu items - Then select the Style option in the upper left. For each text field, there is an option for font style and font size. To the right of the font size is a button with the letter "A" underlined
For plain text boxes - Then use the drop down toolbar directly above the menu design page.
Select the letter "A" underlined button and a larger box will appear. The larger box will show a B for bold, I for italics, U for underlined and TT for all capital letters.
Please click here to see our help center article on how to style text.