How do I customize the permissions for a specific list or library in SharePoint?

1. In the SharePoint admin center, click Settings.
2. On the Settings page, click Permissions.
3. On the Permissions page, select a specific list or library.
4. On the corresponding list or library page, click Advanced Permissions.
5. On the Advanced Permissions page, add the appropriate users and assign them the corresponding permission.
6. Click Save.