Step 1: In Planner, select the task that you want to copy.
Step 2: Open the task’s More menu by selecting the 3 dots (. . .) in the task’s upper-right corner, and then select Copy task.
Step 3: You can change the name of the task, copy the task to a different plan, select a different bucket, and also choose which data you are going to copy over.
Step 4: If you want to copy the task to a different plan, use the Plan name drop-down box to select a different plan. You’ll notice that Assignment, Attachments, and Labels can’t be copied across plans. For more information, see What’s copied and what’s not copied.
Step 5: Select Copy to save your changes.
Step 6: You’ll get a notification that the task was copied. You can click on the notification and it will take you to the new task that you just copied.