need basic help

I need to know how to perform basic editing options like inserting a row, changing size of rows, deleting a row or column.
this is all very basic; I am not savvy with technical aspect / just installed plug-in and have exceedingly limited info on working with codes, etc

Do you refer to dhtmlxspreadsheet or to some other component ?

docs.dhtmlx.com/doku.php?id=dhtm … user_guide