According to your description, your requirements is more related to development, which we do not support. The following suggestion is just for your reference.
You can try to create online meeting using API. The following link shows example how to get online meeting object such as participants, subject:
https://video2.skills-academy.com/en-us/graph/api/onlinemeeting-get?view=graph-rest-1.0&tabs=http
More discussions about how to rename Teams meeting title here:
https://microsoftteams.uservoice.com/forums/555103-public/suggestions/35002180-ability-to-edit-meeting-title-no-title?page=1&per_page=20
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