In this case, Cerebro Tentaculo is installed using the Adobe Exchange system. You can find the Cerebro Tentaculo extension on the Adobe Exchange website or use this direct link: https://www.adobeexchange.com/creativecloud.details.100337.html
To install the extension, in the upper right corner of the Cerebro Tentaculo extension web page, click Free and follow the instructions.
According to the installation guide from the Adobe Exchange website, if you were unable to install the extension using the Adobe Creative Cloud application, you can use third-party extension managers for Adobe Systems products, for example, Anastasiy’s Extension Manager (for details follow the link to see the instructions: https://www.adobeexchange.com/creativecloud/install-instructions.html).
To use the installed extension, launch the corresponding graphical application and activate Window/Extensions/Cerebro in the main menu. The Cerebro authorisation window will appear in case of success.