The default labels are at the left of the fields .

If you Name the Label cells you can also force the XLS formatting to show up in the app.
Ex: fname.label , lname.label

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In the NEWUI you can have labels as placeholders , these are controlled by adding “.placeholder” to the Cell Names along with the labels .
Ex: fname.label.placeholder , lname.label.placeholder

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Fixed Labels can also be set the same way
Ex: fname.label.fixed , lname.label.fixed

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FloatingLabels can also be set the same way. The label appears in the field location when the field is empty when the user starts entering the data , the label floats away to top left.
Ex: fname.label.floating , lname.label.floating

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StackedLabels can also be set the same way. The Stacked labels have the label always in the top left.
Ex: fname.label.stacked , lname.label.stacked

Download the Excel Sheet for the sample.