If you’re not a font designer but still want font customization you can change the kerning, tracking, skew, or the vertical or horizontal scale of the text. You can also add layer effects to give your fonts that extra pop, but try to reserve that for only title text. If you want to try your hand at font design, I would suggest using Illustrator to create your font and then move it to InDesign to do the rest of your layout work. Or send your newly created font to a company that can turn it into a real editable font.