The General tab has the same fields as the Header only content element. In this tab you only decide whether the form should have a heading.

In the Plugin tab, you only need to select the required form. If you only have one or two form definitions, the selection will not be difficult.

Once you save the content element, the form in the frontend looks like this or something similar to the picture below.

The tab General corresponds to the content element Header only. Here you define only whether the content element should have a title.

Since the indexed search is a plug-in, as mentioned above, it is possible to add it by inserting a general plug-in. Then the plug-in must be selected, which is already automatically activated for the content element index search.

The indexed search is ready to use immediately after creating and Save the content element. In the frontend it looks like the picture below.