There are two ways to harvest pending yield in Orca v2, you can chose to harvest:
How to harvest pending yield from a single position.
Navigate to your portfolio ().
Click on the ellipsis button ( ... ) to the right of your position
Review the details in your wallet, including payable network fees and approve.
How to harvest pending yield for all your positions
Click on the Harvest All button to the top right.
Review the details in your wallet, including payable network fees and approve.