Click & drag features.
First I tried using "see inside" peers' submissions (see cyberparra's brilliant #182 from week 3) in order to achieve a click & drag option. When that didn't work, I just used trial and error. Started playing with the "if"/"then" control, but will have to revisit it. AHA, it only took 21/2 years, but I, finally, took Mr Dave's advice (see comments below), found & inputted the 'dragable' option! THANKS, Mr Dave!