How to change django version in PyCharm?
Go to Settings->Project Interpreter. 
Double-click the Django package. Activate the check box Specify version and select the version you want. 
Press the button Install Package.
Django will use pip in the background to install the package.
I've installed new PyCharm that uses django v1.71(default), but I would like to change it to  v1.68. 
How can we achieve this with PyCharm?