Apple has quietly disabled Dashboard by default in the seventh beta of OS X El Capitan, an unsurprising move given the ten-year-old widget feature on Mac has not been updated in over four years and looks increasingly poised for retirement. Dashboard was similarly disabled by default on OS X Yosemite.
While a few websites claim that Apple has removed Dashboard from OS X El Capitan entirely, the feature can be re-enabled by opening System Preferences > Mission Control and choosing "As Space" from the Dashboard drop-down menu. Then, tap on the Dashboard key on your keyboard to bring up the window.
Dashboard was introduced on OS X Tiger in 2005 and acts as a secondary desktop for widgets such as a calculator, calendar, clock, weather, stocks, sticky notes, mini games, dictionary, flight tracker and more. Widgets can be added or removed from Dashboard by clicking on the plus or minus buttons in the bottom-left corner.
Article Link: Apple Disables Dashboard by Default in Latest OS X El Capitan Beta
Thanks for posting how to re-enable. After installing EL CAPITAN - I thought they did away with it altogether. I was a bit worried as some of the dashboard apps I use are productivity apps. Anyway, thanks for the post!