How do I change my layout or disable the automatic speaker option?

Change your layout from the remote on a TWS: 

From the bottom of the remote, use the camera icon on the left side to change the layout options on the screen.

Change the layout from the remote on a Yealink:

For more detailed information: Click this link for the User Guide.

Then locate pages 87 & 88.

*How to Change the layout on a TWS and Disabling Active Speaker.

TWS: You have built-in layout options from your system's remote. Additionally, you can access more layouts, including disabling the active speaker mode by hitting the "0" key on your remote and cycling through additional Easymeeting layouts (touch tone dialing must be enabled)