OBS Browser supports the external bucket adding function.
You have obtained the permissions to read and write the external bucket that you want to add.
For example: Account A wants to add bucket testbucket of account B. Account B must grant account A the permission to read bucket testbucket. If account A needs to upload object to bucket testbucket, account B needs to grant account A the permission to write the bucket. Account A is the owner of the uploaded objects, and needs to grant account B the permission to read and write the objects.
Only a bucket 3.0 or later can be added as an external bucket after its standard bucket policy is set to public read/write.
Suppose a bucket's standard bucket policy is set to public read/write during the bucket creation. To add this bucket as an external bucket, its standard bucket policy must be manually changed to private and then changed back to public read/write.
After successfully adding an external bucket, you can see the external bucket in the bucket list and have the ACL access permissions for the bucket.