How to handle important information not supported by mfdb?

[MikkoVihtakari]

I have landings data with nation information. This information is used to separate data for different fleets. I notice that there is no way of importing a nation column to mfdb using the mfdb_import_survey(). What's the best way to handle such information? Import each nation as a different data_source?

[lentinj]

You can assign landing country to an institute, which has countries as their t_group.

This isn't the best naming I admit, and something we talked about changing in reference to vessel owners, but not changed anything yet.