How is the spacing of rows increased?
What do you mean by “spacing of rows”. Do you mean the height of a row or the distance of lines of text in a cell having multi-line text (by having entered line breaks within cells using CTRL+ENTER)?
@mrt2945, See LibreOffice Help on Row Height and Optimal Row Heights, then press edit below your question to add more information; Add Answer is reserved for solutions. Thanks.