How to resize GUI

When I stretch my window I expect my GUI to be resize accordingly, however, apparently this does not happen when I do so.

I tried GUIDE->Tools->GUI Options->Resizable Behavior->Proportional but it did not work...

Any advice to auto resize GUI?

Thank you!

Answer 1

[Satishkumar Aruljothi]

You need to drag the Small black box to resize the GUI.

The following options is used to rescale the UI components in GUI according to window size ,not whilst creating GUI.

GUIDE->Tools->GUI Options->Resizable Behavior->Proportional

[chlor thanks]

Silly me..Thank you for answering!