Login to the CMS.
In the tree menu, click on any page or post.
Go to the tab 'Content'.
Next to the label, 'Main Content', click 'Add Content'.
From the slide-out panel, select from the wide range of components available.
Add content to your chosen components. Reorder them to suit your needs.
Once you're happy, hit Save and Publish.
A 'Components' folder is automatically created each time a page is added to the CMS.
Under any page or post hover the Components folder > Click on the "..." icon > A slide-out panel will appear with your available components > Scroll up and down in the slide-out panel to see all available components > Choose a component.
Give the component a name in the field provided > Enter the necessary content > Save and Publish.