Using file manager under 12.04, I have created folders under /home/myname/documents/. For example /home/john/Documents/2013 Docs. This morning, I wanted to add the following subfolders /home/john/Documents/2013 Docs/January and /home/john/Documents/2013 Docs/February. Ubuntu won't let me do this. Why? Also, it will not get me change permissions for /home/john/Documents/2013 to read/write.
I am only user of this PC. I am listed as an Administrator. What is purpose of Ubuntu limiting such operations in my own /home/john/Documents subfolders?
How do I permanently fix this major inconvenience?