Ok, but I have that option when GP is install. I dont want to go through all those steps to reset GP, because I have to configure all while my site is getting traffic.
The first time I install GP, I used SIDER template from the Site Library. Then I deleted GP and installed other theme. Now that I want to use GP, when I install it on my wordpress, the template that appears is SIDER, not the default one. I dont want to Activate GP and then go through all the reset steps so I can configure all over again. It would be easier if I install it and then I can make all changes before activating GP, using the default template that appears the first time I install GP.