George Karnos
Ansys Employee

Let me expand on that...
License Server hotsname with Teaching licenses:  Teaching
License Server hotsname with Teaching licenses: Research

Setting the variables depends on what shell you use:

Example is for c-shell
Script for launching Workbench with Teaching licenses:

ANS_FLEXLM_DISABLE_DEFLICPATH=1
ANSYSLMD_LICENSE_FILE=1055@Teaching
/ansys_inc/v222/Framework/bin/<platform>/runwb2

Script for launching Workbench with Research license
ANS_FLEXLM_DISABLE_DEFLICPATH=1
ANSYSLMD_LICENSE_FILE=1055@Research
/ansys_inc/v222/Framework/bin/<platform>/runwb2

Hope this helps!