Changing your lock screen password on a Chromebook is a crucial step to enhance your device's security. Here's a step-by-step guide to help you through the process:

1. Click on the clock in the bottom right corner of the screen.
2. Select your account name and click on 'Sign out.'
3. On the sign-in screen, click on 'Sign in as another user.'
4. Enter your current password and hit 'Enter.'
5. Once signed in, click on the profile image in the lower right corner.
6. Select 'Settings.'
7. Under 'People,' click on the account for which you want to change the password.
8. Click on 'Google Account.'
9. Scroll down and click on 'Security.'
10. Under 'Signing in to Google,' click on 'Password.'
11. Follow the prompts to change your password.

After completing these steps, your Chromebook lock screen password will be successfully changed, ensuring better security for your device.