Is there a way to expand the user view in tempo?

Please advise if there is a way to expand the user view in the application. Right now around 1/6th of screen is occupied by margins, please share few examples if you have. I have attached the screenshot for a reference, arrows indicate the space which I would like to disappear and be used by the application.

Also, is there a way to customize the font size

OriginalPostID-180107

OriginalPostID-180107

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