Interactive Multi-User Dynamic Online Excel Scatterplot Chart with Multi-User Interactive Controls

### Description: I have an Excel file with a scatterplot chart located on the "Graph" sheet. This chart is powered by the worksheet "Calculation" and contains VBA code and ActiveX form controls. I need this functionality replicated online with the following requirements: 1. **Interactive Scatterplot Chart:** - The scatterplot chart should display on a publicly accessible webpage. - Users can interact with dropdowns and selection boxes to customize axes and data shown dynamically. 2. **Multi-User Support:** - Multiple users should be able to access the "Graph" sheet simultaneously. - Each user should have their own settings defined by the dropdowns and selection boxes, without interference with other users' sessions. 3. **Backend Data Updates:** - The back-end "Watchlist" data can be updated regularly by me, and these updates should automatically reflect on the scatterplot chart. 4. **Preservation of Functionality:** - Ensure all interactive features currently in the Excel file (e.g., dropdowns, selection boxes) work seamlessly on the online version. 5. **User Experience:** - Users can only interact with the "Graph" sheet functionalities. - Back-end data and VBA code remain private and accessible only to me. ### Deliverables: - Fully functional online version of the scatterplot with all required interactive features. - Capability for multiple users to access the Graph page simultaneously, each using their own configurations. - A simple, secure interface for updating back-end data. ### Skills Required: - Expertise in VBA, Excel, and ActiveX controls. - Experience with web application development (e.g., HTML, JavaScript, Flask/Django, or real-time frameworks like Node.js or WebSockets). - Ability to translate Excel functionality into a web-based format with multi-user support. Please provide examples of similar projects you have worked on or suggest tools/frameworks for implementation.