How do I install the extras that come with DEVONthink?
To install the add-ons that come with DEVONthink, open the application, then choose Help > Install Add-ons. In this dialog, check all add-ons that you want to install. To install the extras like the Dashboard widget, mount the DEVONthink disk image, open the Extras folder, and follow the instructions for the respective extra that you want to add to your system. To install the bookmarklets, visit the Download Extras page.