Thank you for your message.
The best to push settings on your devices is to apply a TeamViewer policy.
The parameter you will need to add to your policy is the following:
Random password after each session
Value: Generate new and Enforce
Then, apply this policy to your device and they will all have this setting pushed. On top of that, the users won't be able to change this setting (thanks to the Enforce value).
You will find all the information you need in our Knowledge Base article here: How to add a new settings policy
I hope this could help. If not, do not hesitate to ask your questions here.
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