Calendar will not hold window size on restart
I have just upgraded to El Capitan on my iMac. I now find that on starting or restart, Calendar will not retain the window size that I had previously set. Perhaps I need to discard the old preferences setting and start afresh. Will that solve the problem, and if so, where is that preferences setting located?
iMac (21.5-inch, Late 2013), OS X Yosemite (10.10.1)