To install the Jet extension :-
Login to your ftp and go to Magento 2 root folder (generally present under public_html folder)
Create new folder named code under app folder and under “code” folder create a folder named Ced.
Drag & Drop app/code/Ced/Jet directory.
After successfully uploading the directory, the extension will be installed/upgraded.
Now run the following upgrade command in “cmd” php bin/magento setup:upgrade
Once the merchant installs this extension
Configuration settings will be created in his Magento admin panel’s System Configuration named as ‘jet configuration’ under CedCommerce Extension tab.
As well as a menu will be added in the menu section named as jet that will consist of all the panel listing.
This extension will also create a tab in the product’s general tab named as jet.com which will list all the created jet.com attribute.