How to create a Subsite with unique permissions in SharePoint?

Create a Subsite with unique permissions:

1. Log into Office 365 and select your SharePoint site.
2. Click on the Settings gear > Site contents.
3. On the Site Contents page, click New > Subsite.
4. On the next screen, fill out these fields, and then click Create at the bottom of the page.
   • Title and Description
   • Website Address
   • Template e.g. Team Site (classic experience)
   • Permissions e.g. Use unique permissions
   • Navigation
5. Add members to the site groups:
   • Users added to the Visitors group, will only able to log in and read what is on the subsite
   • Users added to the Members groups, will be able to contribute information (edit) and add documents to the site
   • Users added to the Owners group, will be able to add and delete pages and components within the site
6. You can always add more users and/or edit their access to the site later.