When you install a plugin within WordPress, the plugin must be activated, or switched on before it can be used. This simple one-click process can be done within the WordPress Dashboard.
Make sure that you see all the plugins; if not, click the All link under the Plugins page title.
The Activate link appears beneath the name of your plugin, as shown in Figure 2-12.
The Plugins page appears with a message confirming that the plugin was activated, as shown in Figure 2-13.
To deactivate a plugin, follow the same steps, but instead of clicking the Activate link, click the Deactivate link, as shown in Figure 2-14.
The process of activating and deactivating plugins is very simple and easy to do within the WordPress Dashboard. Remember ...