Pick up where you left off with Handoff on Mac
Turn Handoff on or off
On your Mac: Choose Apple menu > System Settings, click General in the sidebar, click AirDrop & Handoff on the right, then turn “Allow Handoff between this Mac and your iCloud devices” on or off. (You may need to scroll down.) On iPad, iPhone, or iPod touch: Go to Settings > General > AirPlay & Handoff, then turn Handoff on or off. On Apple Watch: Open the Apple Watch app on iPhone, go to My Watch > General, then turn Enable Handoff on or off.
Hand off between devices
From your Mac to an iOS or iPadOS device: The Handoff icon of the app you’re using on your Mac appears on your iPhone (at the bottom of the app switcher) or your iPad or iPod touch (at the end of the Dock). Tap to continue working in the app. From an iOS or iPadOS device or Apple Watch to your Mac: The Handoff icon of the app you’re using on your iPhone, iPad, iPod touch, or Apple Watch appears on your Mac near the right end of the Dock (or the bottom, depending on the Dock position). Click the icon to continue working in the app. You can also press Command-Tab to quickly switch to the app that has the Handoff icon.