How to access the live customization interface of Nimble Builder ?
Once installed, the Nimble page builder can be used in the WordPress live customizer.
You can start using the Nimble Builder from a brand new page, or from any existing content of your site.
From the front-end of your site
When browsing your front-end site, click the customization link in the top bar of the administrator.
From the WordPress administration
When editing an already published post, page or term, simply click on the Nimble Builder link in the top administration bar.
From your WordPress administration page, navigate to Appearance > Customize