Within the Translation tool, navigate to the Glossaries tab.
To add a new glossary:
Click “Create New Glossary” in the top-right corner.
This will open a new page where you can:
Give the glossary a name.
Specify the source and target language.
You can add glossary entries in two ways:
Manually add rows: Click “Add Row” and enter the word in the first column and its translation in the second column.

To remove a row, simply click the “delete icon” to delete it.