Visio: How to protect shapes from being selected/moved inadvertently? Use layers!

Have you spent enough time in visio trying to select multiple objects using the mouse but ended up in some text entry for an underlying shape?

I have.

So from now on I use layers (not the background page) and will lock out the layer with my blocks of rectangles that are containers to place shapes in.

Here are some resources:

http://www.msoffice.us/Visio/(Visio%202010)%20Creating%20Stencils,%20Master%20Shapes,%20and%20Templates.PDF

http://office.microsoft.com/en-us/visio-help/about-locking-shapes-and-preventing-changes-to-files-HP085050461.aspx