The operations help, doc and type can be used to find details of any function.
If you type
net = patternnet
you will find the plot functions
plotFcns: {'plotperform', plottrainstate, ploterrhist, plotconfusion, plotroc }
Most of what you want can be obtain from looking at the code of one or more of these functions. For example,
help plotconfusion
doc plotconfusion
type plotconfusion
reveals the additional functions confusion and roc
In addition, you can search both the NEWSGROUP and ANSWERS with these terms to view posts.
Hope this helps.
Thank you for formally accepting my answer
Greg