I am trying to get the MS TEAMS integration up and running in my sandbox but am running into difficulties.  When i try to authenticate my salesforce credentials within MS TEAMS i am only given the option to log into my production org via login.salesforce.com.  Since I am trying test in a sandbox environment I need to get to test.salesforce.com.   I only have MS TEAMS activated and provisioned to my license in a sandbox at the moment.  I have not figured out a way to get out of the login.salesforce.com and switch to test.salesforce.com, has anyone come across this and if so how did you get past?