> For the complete documentation index, see [llms.txt](https://genfarmer-support.gitbook.io/genfarmer-eng/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://genfarmer-support.gitbook.io/genfarmer-eng/main-menu-bar/control-center/group-control.md).

# Group Control

This function allows for the synchronization of device controls; by operating on one device, the other selected devices will be controlled in the same way as the main device.

Để sử dụng được tính năng Group Control, cần chọn các thiết bị để cùng đồng bộ thao tác

<figure><img src="https://605836273-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7JJxETkZAGywbrUL9WJl%2Fuploads%2FO8qtI8mGEJjziUeh5AJg%2Fimage.png?alt=media&amp;token=4a609b20-fab8-4c14-bbcb-c251744dba0d" alt=""><figcaption><p>Select All Devices</p></figcaption></figure>

Then, open the stream for any device to make it the primary device for operations.

<figure><img src="https://605836273-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7JJxETkZAGywbrUL9WJl%2Fuploads%2FqKUIIckdypZ5fvvVvFrz%2Fimage.png?alt=media&amp;token=f7f8316f-2e38-4e54-b81e-e5180d47bc02" alt=""><figcaption><p>Stream screen for synchronizing actions with other devices.</p></figcaption></figure>

Simply operate on the streaming device, and the other devices will be synchronized identically.

<figure><img src="https://605836273-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7JJxETkZAGywbrUL9WJl%2Fuploads%2FWmpE9GSY5hsl7zyXS7Fh%2Fimage.png?alt=media&amp;token=74ec5118-20bc-4150-b77f-049f92ecce2f" alt=""><figcaption><p>Open settings on the stream device, and the other devices will also open them simultaneously.</p></figcaption></figure>

This is a strength of GenFarmer, helping to minimize user time and actions. This feature is completely free and has no action limits.