You can enable the glossary by importing a file... (currently, both tbx and utx glossary files are supported)
or by manually adding and defining the terms:
Using the glossary
In the focus view, on every segment on the right side you will see the terminology based on the source text (suggestions for term usage) and your translation (approved term usage, suggestions for alternatives):
The terms will be checked on every change of your translations. If a forbidden term is used Issue 230 will be raised.