I am quite new to Visio and I am using Visio 2013 professional.


I´ve got a quite complex diagram with a lot of shapes.
Now I´d like to group some of the shapes optically with a doted line or so arround them.
My first Idea was to use a container but now there is my problem:
I only can draw a rectangular container arround the shapes which also covers other shapes in the neighborhood which are not part of the group.

Question:
How can I use a not-rectangular container - for example in L-form.
The other Idea would be just to "draw" a freehand doted line arround the shape but I don´t find how to do this either.

Any help is very welcome.
Thank you in advance!