A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate
in the Unity community.
and one more thing i am using unity 2019.4.3
i have even done this but still could not find it in the add components list, and when i imported mirror asset for doing this it did not show up...
i dont even have a package manager on the windows
if i am going from unity connect and posting project but then if i am uploading file then it stops at the middle only