MacBook Three Finger Drag

Refer: https://support.apple.com/en-us/HT204609

1. From the Apple menu, choose System Preferences.
2. Click the Accessibility icon.
3. Choose Mouse & Trackpad from the options on the left.
4. Click Trackpad Options.
5. Place a checkmark next to "Enable dragging."
6. From the related pop-up menu, choose “three finger drag” so there's a checkmark next to it.
7. Click OK.