dynamic Polar plot on normal plot

I am trying to use a dynamic polar plot on normal plot. I have a random waypoint model. Now, I would like to put a dynamically changing polar plot to reach a few selected users in the random waypoint. I need to add a polar plot which has directional antenna beam. Please help me out as to how to change the beam position according to user position which we can see on the plot. As in, the beam should encircle the user position dynamically. The other files regarding this are present code are in the following link. RANDOM WAYPOINT MOBILITY MODEL. Request a big help. I have tried all possible cases with polar plots and overlaying. But the beam if not getting dynamic. Its not changing based on the user position. Please help me out

Thanks in advance.