| Name | Type | Description | Notes |
|---|---|---|---|
| allow_to_add_external_users | int | Allow members to add external users to the channel. The value can be one of the following:<br> `0`: Disable. Do not allow channel members to add external users to the channel.<br> `1`: All channel members. Allow all channel members to add external users to the channel.<br> `2`: By members in your organization. Allow only members in your organization to add external users to the channel. | [optional] |
| new_members_can_see_previous_messages_files | bool | New members to the channel can see previous messages and files posted in the channel. | [optional] |
| posting_permissions | int | Permissions for members to post to the channel. The value can be one of the following:<br> `1`: Everyone. All members can post to the channel.<br> `2`: Admin only. Only the admin can post to the channel<br> `3`: Admin and specific members. Only the admin and specified members can post to the channel. <br> | [optional] |