Within the context of a project, click on the Metadata Designer
button in the left-hand panel. It will bring up a metadata designer view that can be used to:
Within the Metadata Designer, you can define a Metadata template as one or more tables. Each table consists of a number of typed columns. Supported column types are:
Columns can also have constraints defined on them. On a column, click on cog icon (configure), where you can make the field: