1. Login to your Drupal 8 website as an administrator.
2. Click on the “Configuration” tab in the top menu.
3. Click on the “Migration” tab from the Configuration menu.
4. The Migration page will display all the migration modules.
5. Select the migration module you want to configure.
6. Click on the “Configure” button next to the module name.
7. You can see the settings for that migration module on the configuration page.
8. Configure the settings as per your requirements.
9. Save the configuration changes.
10. Repeat steps 5 to 9 for all required migration modules.