Each CQ5 template has a different set of components that can be defined for use. This allows you to control what authors will be allowed to use, and it makes them easier because they will only see the relevant components, not tons of CQ5 components.
When viewing a page, you can switch to what is called the "design" mode (as opposed to the "edit" or "preview" modes, where you spend most of the time creating a page). This development mode allows you to define individual settings for each template. It is accessed through the yellow bar icon at the very bottom of the sidekick.
In development mode, click the "Edit" button, which is located on the blue toolbar called "Design pairs", there you can enable the components that you want to use.
When you create components, keep in mind that the design mode and corresponding component design dialogs are a convenient way to define global parameters for each template that you do not want to install on each component instance.
Gabriel walt
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