Do you mean “Where are they?” in terms of progress, or how do they meet? I’ll answer both.
The Pathway document https://digitaltwinhub.co.uk/gemini-commons/informatioon-management-framework/Â sets out the work being done by the IMF team, including the TLO (Top Level Ontology)Â part of the FDM (Foundation Data Model).
The Pathway Document was published in May, and the Technical Team (also known as the Rat Pack) has been working on what it sets out since then. So far, they have published a Survey of Top Level Ontologies, and a Survey of Industry Data Models as source material for their work developing a Foundation Data Model and Reference Data Library.
https://digitaltwinhub.co.uk/gemini-commons/imf-technical-documents/
Work is also progressing in developing the Top Level Ontology for the Foundation Data Model. An early deliverable from this is due around Christmas for publication after Christmas.
For those interested in keeping up to date with and contributing to /reviewing the work being done, early visibility of work is made to a Google Group: UK NDT FDM. Ask me if you wish to join the group.
If that has not answered your question, please let me know.