Hello! I’m currently working on a Chat Plugin and I have this option to import files from your computer. For that, I use rbxtemp://123. Now locally, everything works fine. But when I test it with another friend, I can see the Audio/Image uploaded, but he cannot. That is because rbxtemp files are only saved locally.
So what I am trying to do is create something like rbxtemp that works in Team Create.
Thank you. 
Hello! Unfortunately you CAN’T directly share rbxtemp:// files with other team members in Team Create they are temporary assets that only exist locally in your studio session and DO NOT REPLICATE to other collaborators.
You can refer to this here :
Awh, I was hoping for a way to share them with other collaborators. Quite a shame there isn’t a way to do that without uploading the image/asset directly to Roblox. There needs to be a function that lets you share temporary files with other collaborators. Something like File:ReplicateTemporaryStudioId(). 
Thank you.