To share access to your Google Nest devices, the process typically involves using the Google Home app, which is designed to help users manage their smart home devices easily. First, ensure that the person you wish to share access with has a Google account. Open the Google Home app on your mobile device and select the home that contains the Nest devices you want to share. From there, tap on the settings icon, which is usually located at the top right corner of the app. Look for the option that says "Home members" and select it. You will have the choice to invite others by entering their Google account email address. After sending the invitation, they will receive a notification and will need to accept it to gain access. Once accepted, they will be able to control the devices you have specified. Always keep in mind that the specific permissions can vary based on the type of device and the settings you have configured. For further details, you may explore the current Google Nest page for additional guidance.