Website Update and Payment Integration

I need to update my website for my lacrosse training business and integrate an online payment system.

Requirements:
- Update content for an upcoming training session in the relevant section.
- Integrate a secure online payment system.
- update online calendar

Ideal Skills and Experience:
- Experience with corporate website management.
- Proficiency in content management systems (CMS).
- Expertise in integrating online payment systems.
- Strong attention to detail and design consistency.