It appears to mean that they created a caucus within the organisation that certain members could use to join the greater conversation. I think the use of track here is borrowed from recording a song in a studio in which several tracks with different instruments are recorded and then later combined into the finished song.

This might refer to "track" as they use it in universities, an academic course or path, but applied to a sub-group of the association. For example, at a university, within a Business Admin degree, you might have the tracks General Business Management, Analytics, and Health Administration, from which students choose as a specialty.

I've seen this used in both English and Spanish/Catalan to designate a subset/subgroup:

See these examples:
https://www.itu.int/net4/wsis/forum/2018/ >> "virtual reality track", "innovation track"

https://www.sas.com/da_dk/events/sas-user-forum/2017.html " >> "Intro & Welcome in each track"

https://www.redhat.com/es/forums/emea/iberia-track >> "Disfruta de las sesiones del track de España y Portugal en el evento EMEA Red Hat Forum 2020"

It refers to specific content for a specialty or geographical location. You can keep it in English as "track".


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Note added at 2 hrs (2022-05-18 09:33:44 GMT)
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Another: "We invite submissions to the LACAIS track of AMCIS 2022" (Latin American and Caribbean Journal of the Association of Information Systems, as part of the Association for Information Systems) https://www.lacais.org/home

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Note added at 2 hrs (2022-05-18 09:35:12 GMT)
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https://www.balas.org/Annual-Conference

"Special Conference Tracks:

China, Asia and Latin America: Business and Economic Issues
Innovation, entrepreneurship, technologies: Gateway to Recovery and Relief for the LATAM Region"