Is it possible to generate multiple user client secrets in LMS?
It is not possible to generate multiple user client secrets for users in LMS. Users use the system client secret to authenticate and you can have only one active. Generating a new client secret will invalidate the previous one.
For learning administrators, it is possible to generate client secrets for each account. The below links contains the steps to generate system and learning administrator client secrets:
odata, api, webservices, oauth, client secret , KBA , LOD-SF-LMS-ODA , LMS Web Services OData , Problem