Resizable pieces help needed.
 

Hi,
I am trying to update my target window.
I currently have it displaying my extended targets and target's buffs (amongst other things).
What I am trying to do is make the extended target part and the buffs part resizable (they are currently side by side, ext on the left and buffs on the right).

I'd like to be able to resize them horizontally (so ext gets wider as buffs gets narrower and vice versa).

I think I need to add a LayoutStrategy section but I can't seem to get it quite right.

Any suggestions appreciated.

Thanks.