Turn Drop In On or Off for Your Device
Use the Alexa app to manage Drop In for a specific Alexa device.
-  Open the Alexa app 
.  -  Open Devices 
.  - Select the Device Type Filter.
 - Select Echo & Alexa.
 - Select your device.
 - Select the Settings
 icon.  - Select Communications.
 - Select Drop In. 
     Note: Incompatible devices don’t display the Drop In option in their settings.
 - Select On or Off.