You can use the COS console to set or modify bucket access permissions of the following two types.
Public permissions: include private read/write, public read/private write and public read/write. For more information, see Types of Permission under Bucket Overview.
User ACLs: the root account has all bucket permissions (full control) by default. You can add sub-accounts and grant them permissions including read/write, read/write ACL, and even full control.
Locate the bucket for which you want to set or modify access permissions, and then click the bucket name.
Select Permission Management > Bucket ACL and you can set both public permissions and user ACLs for the bucket. For example, you can add a sub-account, whose ID can be viewed in the CAM console.
In the pop-up window, select the buckets that you want to grant permissions for. Then, scroll down to set both public permissions and user ACLs. For example, you can add a sub-account, whose ID can be viewed in the CAM console.
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