CLI configure environment for a second user

- [x] I have checked that the [SDK documentation][sdk-docs] doesn't solve my issue.
- [x] I have checked that the [API documentation][api-docs] doesn't solve my issue.
- [x] I have searched the [Box Developer Forums][dev-forums] and my issue isn't already reported (or if it has been reported, I have attached a link to it, for reference).
- [x] I have searched [Issues in this repo][github-repo] and my issue isn't already reported.

### Description of the Issue

I have installed CLI in my environment last month and configured environment with my json.config file (default).
When I check my install using box users:get - it returns the info for my service account user (and I generate token for that user.)
context: I use the CLI in my workflow to trigger JWT token.

NOW I wish to add a SECOND automation user and private key to get token with the SECOND automation user's credentials.
After following the directions:
$ box configure:environments:add PATH_TO_CONFIG_FILE --private-key-path PATH_TO_PRIVATE_KEY --name SecondKey
Successfully added CLI environment "SecondKey"

### Steps to Reproduce
I have executed --name SecondKey in my environment
and then attempted to verify the installation of a second CLI environment --name SecondKey
by executing box users: get SecondKey
box tokens: get SecondKey

and nothing happens

### Expected Behavior
I expected to return the user info for the SECOND automation user
when I execute box users:get it returns information from my first environment

### Goal
I would like CLI to be able to use both environment regularly to produce tokens [box tokens:get] for each service account by adding some sort of flag to my box []: get commands

### Screenshots
not available

### Versions Used
Box CLI: Install Sept 2023

[sdk-docs]: ./doc
[api-docs]: https://developer.box.com/docs
[dev-forums]: https://community.box.com/t5/Platform-and-Development-Forum/bd-p/DeveloperForum
[github-repo]: https://github.com/box/boxcli/search?type=Issues