Dear Rachel Hawksford,
Thank you for reaching out.
If you're the sole individual in your organization needing to schedule posts in Viva Engage, only you require the Employee Communications and Communities license. This premium feature enables functionalities like scheduling posts, articles, and announcements.

The rest of your organization can view and engage with your scheduled posts using the Viva Engage Core license, which comes with Microsoft 365 or Office 365 enterprise plans. This core license allows users to access and interact with content in Viva Engage, ensuring seamless communication across your organization.
Therefore, you don't need to purchase Employee Communications and Communities licenses for all users—only those who need to create and schedule posts require this premium license.
Thank you for your time and patience, we hope you have a great day!
Kind regards,
Community Moderator | Sophia