Force Generate Visual Studio Project Files to make a Vs2015 sln

Hi a few people on our team have VS 2015 and 2017 installed and they have just come to start working with an existing UE4 project but when they generate the VS project files from the context menu while it works the resulting project will only open in VS2017, is there anyway to force it to make a vs 2015 project. Like you can when you are building the engine from source and so have access to GenerateProjectFiles.bat


To specify the version explicitly, you add a parameter when you run the batch file: -2015 or -2017