You would certainly like to avoid inadvertently moving, modifying, or deleting an object, so you might want to lock it.
Check this video to know how to proceed
How do I proceed?
- Select one or more objects.
- Lock it/them with the button "Lock" or ⌘ + L.
- If you would like to unlock 1 locked item, select it with ALT + CLICK and unlock it or Unlock all objects locked at anytime with the button "Unlock" or ⇧ + ⌘ + L