The Slider Settings section in the Gym & Fitness theme Customizer contains 2 options. Navigate to Appearance → Customize → Theme Options → Slider Settings to access these settings.

Options

• Slider Type (Select) — Choose between none, built-in slider, or Revolution Slider.
• Revolution Slider Alias (Text) — Enter the Revolution Slider alias.

After making changes, click Publish at the top of the Customizer to save your settings.