How to add a search form on header

1

Go to WP Admin > Appearance > Widgets and drop a "Search form" widget on one of your sidebars. 

2

Go to WP Admin > Appearance > Headers/Footers and select the header you are using. In the case you are using the demo content, open in Live Composer the "Header - default design".

3

Make room for the search form. Using the "Columns selector", reduce the columns size of the modules used in the header.

4

Drop the "Widget (Sidebars)" module. 

5

By default, a module will have 12/12 column width. Select the 1/12 column width.

6

Move the module on the right side of the menu.

7

Open the "Widget (Sidebar)" module settings panel and select the sidebar where you dropped the search form widget.

8

Style the module to fit it nicely in the header.

9

Publish the changes.