In a large glass punch bowl, mix the lemonade and lemon-lime soda.
Add in half of the sherbet, and stir well to make frothy.
Add in small scoops of the remaining well-frozen little sherbet balls.
And the lemon and/or orange slices (if using).
NOTE: just a hint, prepare and freeze your sherbet balls very well in the freezer a head of time so they will remain hard in the punch, and not melt as fast, I do this days ahead, and place them in a large plastic freezer container until ready to drop into the punch.
Also make certain that your lemonade and soda are VERY cold, so you do not have to add any ice to the punch when serving, although of coarse ice may be aded if desired.