From the left navigation menu, click on your Team.

Click on the 3-dot menu icon for the Objective you wish to add a Key Result.

Select Add Result.

Add the Key Result Name.

Add a Description.

Search and select the person who will be the Lead.

Select how the Key Result will be measured (Numerical, Percentage, Currency).

Select Target type (Increase to, Decrease to, or Binary).

Add Start value and Target value.

Select Key Result as Result Type.

In Advanced Options, you can add Contributors. If you know this Key Result won't start to develop until you've worked on Initiatives that'll affect it, you can add a Start Date. You can also add a Due Date.

Click Save.