Drag and dropping into project

I want Playcanvas users’ (my designers) to be able to drag and drop a folder structure containing files (various) into Playcanvas. Is this possible?

If not, is it maybe possible to upload the files to the asset store somehow and my designers get them from there? If so, how?

…or is there some other way? The only way I’ve seen done before is to have an empty template project with the files already there, but this seems a bit backwards. ie my ‘designers’ already have a project ongoing.
Many Thanks

You can copy and paste assets between projects that you have access to.

Example Touchscreen Joypad Controls | PlayCanvas Developer Site

Docs: Assets Panel | PlayCanvas Developer Site