@AlexTrovato made their first PR 15 days ago (Bluetooth presence sensor by atrovato · Pull Request #1027 · GladysAssistant/Gladys · GitHub) I gave feedback on the general architecture of the feature 
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There is no multi-user management for now, it’s a feature that is listed but for now there are other features that are more requested so we are doing it progressively according to the community’s requests
You can vote here if you want this feature: