I would shy away from sharing environments with other users, because if they don’t know what they are doing, they could add packages that could conflict with other packages and/or even delete packages that another user might need. The preferred approach is that after you have created an environment, you export it as a yml file:
conda env export > environment.yml
Then you send the users the yml file and have them build their own environment using the yml:
conda env create -f environment.yml
If you really want to use a shared environment where every user can access, then you have to use the -p or --prefix option in your create:
conda create -p C:/full/public/path/to/py35 python=3.5
And then instruct your users to add the public path (C:/full/public/path/to) to their conda config file. Then, they should be able to see the environment when running conda env list.