Using Modifier Keys with DwellClick
DwellClick has handy features for clicking and dragging with modifier keys shift ⇧, control ⌃, option ⌥ and command ⌘, without having to hold down the key.
Tap ⇧, ⌃, ⌥ or ⌘ to set that modifier to go with the next click. The symbol will appear in grey above the pointer: . Tap the same modifier again to lock it. The symbol will turn white: .
To cancel the modifier, press Esc (or any key), or click any mouse button.
Tap ⇧, ⌃, ⌥ or ⌘ while dragging to apply that modifier to the drag. Tap the same modifier again while dragging to turn it off.
Modified Dragging with the Pop-up
While the pop-up is on screen, press ⇧, ⌃, ⌥ or ⌘ to change the pop-up panel to show a modified drag. For example, option-drag:
→ press ⌥ →
Press Fn again to return to the standard pop-up.