Drag-dwn, (insert), Multiple lines in Calc?

I am able to Expand, the sprd-sht cells; ONE-line.

Having a sprd-sht with the Colm. SUMS, (also AVERAGES below that) … How expand a block of 3 lines?

Please, may I ask you to explain in more details what your problem is? Or, is the solution already that you just try what you think will work, and get back here to present results, problem description and what your question is?

Highlight the 3 rows/lines under the row where you want to insert them. Right-click inside the row numbrs on the left side of the screen, select “Insert Rows Above”. Done.