I want to plot a variable number of lines. The number of lines will be set by the spinner value. I want three drop downs to appear for each line so that I can specify linewidth, color, and linestyle. So if spinner value = 1, 3 drop downs will appear in one row. If spinner value = 2, 6 drop downs will appear in 2 rows (3 columns), etc. Is it dynamically possible to change the number of drop downs to appear in my GUI? If so, any recommendations to make this happen?