You only need one register_setting() call. The rest can be handled internally. I wrote a Settings API tutorial that explains how to do so.
Without delving too deeply into the code from the tutorial you linked, just based on the screenshot it appears that the Digital Raindrops code bypasses the standard, WordPress core admin UI to do something different with the sections within each page tab.
Related Posts:
- not getting API setting saved confirmation message after update on option page
- How do I add settings to the Background Options Page?
- How To Add New Option Types To Option Tree?
- esc_url not working within add_settings_field callback
- Cannot update WordPress General Settings Site Title and Tagline
- How would you accomplish the following advanced settings page?
- How can I make my options in an array and store theme in WP options one DB row?
- Efficiency of wp_options vs a new table
- Consequences if using PHP include TEMPLATEPATH?
- Update Specific Key Value in Complex `wp_options` object
- Create settings field on button click
- Theme Option’s Save Button is not working
- How to store widget fields data as an array?
- WordPress API Menu/Submenu Order
- What are the advantages and disadvantages of Option Tree over the Customization API?
- Is it possible ( or advisable) to allow open access to the new theme customizer for potential clients?
- What WP folder can I use to write files to?
- WordPress Settings API error
- Add a dropdown to theme customizer
- Understanding wp_add_inline_style
- Add a new checkbox in theme options
- Modular theme settings
- How to add Color Picker in Theme Options for the following?
- Setting multiple default background images?
- Best practice way to implement custom sections into a WordPress theme
- How does WordPress decide what template to use as frontpage
- get_option function
- Best practice (forward compatibility) for theme options
- Get category slug and display it on a query_post
- Override Current Theme Setting in wp_config.php
- How to set the default value of a option in a theme?
- Why might $input (Settings API) be coming through empty?
- Where is default wp_head() implemented?
- Add a preview to a WordPress Control Panel
- WordPress settings API error when checkbox unchecked
- How to deploy a new theme/theme options from staging to production site
- WordPress Customizer Typography: How to load just the unique Google Fonts?
- Multiple Custom_Background, is it possible?
- What is the best way to export and import theme options?
- Static Front Page problem
- two tinyMCE editors in the same page
- How to remove menus section from WordPress theme customizer
- Settings API enable default settings on theme install?
- WordPress Errors in generated by theme check plugin [closed]
- WordPress Theme customisation CSS
- Select front page and blog page in custom theme settings page
- Using the theme options to change background
- Theme Options page not showing up in admin menu
- How to hook CSS file according to theme selection in the customizer section
- How Can I Create a List of Values to Be Iterated Through via WordPress Customization API?
- Change setting name in Customizer and keep the data
- Is there a way to activate different theme for specified users? [closed]
- How to upload images using Settings API
- after_setup_theme, Global Variable and Theme Customizer
- Is there an action for save_menu and/or update_menu?
- Theme settings keep getting reset/erased
- For best DB performance should I serialize all theme options together or by type?
- Set multiple templates per post
- Creating Theme Options Page
- Location of theme options page menu icon
- WordPress add options to theme not displaying
- qTranslate with my own theme and settings
- Where should I update_options in a theme?
- How can I display/hide certain content based on a Theme Option field?
- Create wordpress header with custom logo in between the menu splitting the menu into two equal parts [closed]
- Access theme options in templates
- Set the checkbox as checked by default at options page
- get_option in header.php not returning value from customizer
- Internal error 500 accessing Theme > Customize
- get_option() returning empty
- Can I have two different theme for two different language?
- Where to hook settings api init
- Using an if statement in the theme customizer page
- How to add “Template” option in page attributes panel?
- Single Page Design, Storing in Theme Options
- How to show custom meta_key in each li of menu
- How to: JQuery multiple wordpress media uploader buttons in the same options page?
- Update problem with update_option() in combination with register_setting()
- Following Web Performance Optimization techniques to output static and dynamic css
- How to disable wordpress from overload my stylesheet styles with customizer styles
- How to enqueue javascript for WP Customize options sidebar?
- How do i place same widgets multiple time by default on theme activation?
- Is it possible to save more than one image to an option?
- How to Call pages from a Options Panel
- Theme automatically inserting “more” tag on every post
- Custom widgets in theme option page
- wp_deregister_script was called incorrectly
- The content not wrapped in paragraph tags with get_page_by_title()
- Undefined index: debuging error for theme option template snippet
- How to Disable Color Options?
- Import/Export WordPress demo
- Turning WordPress Into full-featured website?
- How to make admin theme option with image slide show?
- Theme.json: creating different sections of the color palette
- Is it ok if I use this tag?
- How to show associated fields if checkbox is checked in customize widget screen using wp_customize?
- Remove nonindex meta tag
- TItle In Latest Post is not using H1 Tag [closed]
- Export WordPress theme with modifications for other site
- WordPress 6.4.2 – can’t load editor style css using ‘after_setup_theme’ or ‘admin_init’ actions