Can you spawn stuff online or use a tool that other people dont have

Can you spawn stuff online or use a tool that other people dont have because with adv duplicator you can upload your files so you can use them but I want to use my tools and models online.

No, you cannot use tools which are not installed on the server in question.

But can you upload them to the server?

Unless you are the owner or have the servers FTP, you can’t upload tools.

If you just play on the server as a regular player, not an admin, you cannot use the tools that are not on the server.