I can help you with that! Here are some tips to design a GUI that supports both live and on-demand content in streaming services:

1. Clear categorization: Separate live and on-demand content into clear categories or tabs.

2. Prominent live indicators: Use visual indicators (e.g., "LIVE" badges, red dots) to highlight live content.

3. Scheduling information: Display scheduling information for live content, including start times and duration.

4. Countdown timers: Use countdown timers to create anticipation for upcoming live events.

5. Live preview: Offer a live preview or thumbnail to give users a glimpse of the live content.

6. On-demand content organization: Organize on-demand content by genre, category, or release date.

7. Content information: Display relevant information (e.g., description, runtime, ratings) for on-demand content.

8. Continuous playback: Allow for continuous playback between live and on-demand content.

9. User preferences: Allow users to customize their experience by setting preferences for live or on-demand content.

10. Clear labeling: Consistently label live and on-demand content throughout the GUI.

11. Promotions and notifications: Use promotions and notifications to inform users about upcoming live events or new on-demand content.

12. Search and filtering: Implement robust search and filtering functionality to help users find specific content.

By incorporating these design elements, you can create a GUI that seamlessly supports both live and on-demand content, providing an intuitive and engaging experience for users.