Option to filter topic modelled data by groups

[ColinDaglish]

Is your feature request related to a problem?
No

Describe the solution you'd like
The users would like the option to filter by other grouping characteristics in the data (e.g. by whether needs met), so that comparisons can be made.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.