in panel layout i want to do an open on the middle of the top rectangle with curve instead of a 90deg corner for grouping 8  XLR connector where i will write audio input (the 8 xlr connectors will be label 1 thru 8)

How do we do this?

Regard

As we discussed in the webinar, one way to do this is by using the Bezier tool.  In the Help file refer to Beziers, and see also the Tutorials, lesson 5.

There are several other ways to achieve the same result, but the Forum is not really the right place for application walkthroughs.  If you have trouble finding your way on this, please attend another webinar.