SOLUTION for Calendar Overlays with modern SharePoint list

1. Create a group calendar
Create a new group in Outlook or Microsoft 365 Admin Center (automatically generates a shared calendar).
2. Add an event
Right click on the group calendar in Outlook → “New Event”, fill in the title, time, location, etc.
3. Embed in SharePoint page
Go to SharePoint page → Add “Group Calendar” web part → Select target group calendar → Save.
Effect: Synchronize group calendar events in real time and support multiple editors.
Method 2: Power Apps Quick Integration
1. Connect to a SharePoint list
Open Power Apps → “New” → “Customize App” → select “Connect to SharePoint” → select the event list.
2. Design the Calendar View
Drag and drop the “Calendar” control to the canvas → Bind to a SharePoint list → Set the field mapping (e.g. date, title).
3. Embed in SharePoint
Click “Publish” → “Embed in SharePoint” → select target page → save.
Effect: Customize the calendar style and support multiple list data integration.