The Containers panel sets preferences for using the Container feature; in particular, you can use the Status and Update settings to improve performance.
Choose how to convert unsupported rules (Only Add New Objects or Anything Unlocked) when saving a container in the 3ds Max 2010 format (see Save As).
Choose an option to define how to display the status (Unsaved, Open, and so on) of containers as text labels in the viewports:
These settings determine whether 3ds Max performs an update automatically when you load or reload a container.
When on and you use the Load command on an unloaded container, 3ds Max automatically updates the container from the source file.
When on and you use the Reload command on a local container, 3ds Max automatically updates the container from the source file.
This can be useful when you’ve inherited a container that uses the Only Add New Objects or Anything Unlocked rule and saved a local definition; the inherited content can still be updated from the source container.