I use a single username but have multiple organizations.

In 1.14.1 it seems that the web browser is being used to authenticate then it drops you into the "last org in the list" and you can't really change that in an obvious fashion.

I use

anaconda login
anaconda whoami

with anaconda.org

Let me know if you need more info to recreate.

My workaround has been to use anaconda-client version 1.13