How to Enable the Three Finger Drag Gesture on Mac Trackpads in OS X

My new iMac came with a Magic Trackpad2 and for some reason the 3 finger drag feature was not there. Here’s how to get it back:

Enabling Three Finger Drag on Mac Trackpads in OS X El Capitan

In OS X 10.10.x and OS X 10.11.x and newer you’ll find the option under Accessibility as follows:

1. Open “System Preferences” from the  Apple menu
2. Choose the “Accessibility” preference panel
3. Scroll down the list on the left side and select “Mouse & Trackpad”
4. Click the “Trackpad Options” button
5. Check the box next to “Enable dragging” and pull down the menu alongside to select “three finger drag”, then click “OK” to set the preference
6. Close out of System Preferences as usual and try the feature out

Source: How to Enable the Three Finger Drag Gesture on Mac Trackpads in OS X