Platform
Permission Overwrite
Also called channel override
A per-channel rule that grants or denies a permission to one role or member, overriding the server-wide role permission for that channel only.
Overwrites resolve in a fixed order: @everyone server permissions, then @everyone channel overwrite, then role overwrites combined, then member-specific overwrite. An explicit deny at a role level beats an allow from a lower-priority role.
This resolution order is why “the bot has Administrator but still cannot post” is almost always wrong as a diagnosis — Administrator does bypass overwrites, so a failure with it granted is usually role position, not permissions.