How do I reuse release and environment variables in other existing release definitions in TFS 2018?

Question

In TFS 2018 I have a list of Release definitions which should share the same variables. These variables consists of Release and Environment variables. For one release definition all the required release and environment variables are defined already.

However, I didn't find a way to easily reuse the defined variables in other existing release definitions in TFS 2018. Is there a way to do this?

Creating variable groups is not an efficient option since defining multiple variable names in that group is not possible

Example of defining the same variable name multiple times with different values and different scopes in a specific release definition. This is what I want also in a shared group:

Answer 1

为共享变量创建变量组，并将它们链接到相应的发行版和/或环境。