Webflow does not currently support multiple users working in Designer mode simultaneously. Webflow's collaborative capabilities are focused more on the team-based workflow and enable multiple team members to collaborate on a project sequentially rather than concurrently.
With Webflow's Team Plans, you can invite team members to work on the same project, granting them different access roles such as Designer, Editor, or Admin. This allows for collaboration through different stages of the project, with designers creating and managing the site's layout, editors editing the content, and admins overseeing the overall project.
However, it's worth mentioning that while multiple users cannot work concurrently in Designer mode, you can use the "Share" feature to provide a read-only link to your project. This allows others, such as clients or stakeholders, to view and comment on the project's progress without having access to the Designer.
Webflow has always been user-centric, frequently rolling out updates and new features based on user feedback. Therefore, it's advisable to keep an eye on Webflow's official announcements and updates to stay informed about any changes to this feature.