Model version
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Any version of a model can be frozen for all users to prevent it from being edited in any way. To do this, click the 3 dots next to a model version, select Edit and scroll the pop-up window all the way to the end. At the bottom there is a Freeze model version for all users button. By default this button is disabled, and when enabled it turns red.
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Archived model versions
Model versions that no one has accessed for over 2 weeks are automatically archived to reduce space taken on the environment (the inactivity time can be adjusted via a support request if needed).
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You can see this icon next to the model version name indicating that this version is archived.
Selecting this model version will raise a prompt if you want to unpack the model. This process usually takes between 2 and 15 seconds and it is a one time operation, meaning the model will stay in uncompressed state until next period of 2-week inactivity.