This is an old article - please go to https://help.klevio.com/en/articles/4507150-how-do-i-share-digital-keys for a recent one
First, make sure the person you want to share keys with has created a Klevio account and downloaded the app onto their phone.
Then on your own Klevio app, press the ‘People’ tab at the bottom of the screen, where there is a tab at the top of the page called "Share a Key":
(Please note you cannot share a key unless you are the Klevio owner).
Set the keyholder name and email address.
Select the door you want to share.
Choose if you would to issue a time limited key.
Once this information is entered, press ‘Review’ at the bottom of the screen. On the next page you can review the key and then issue it by pressing "Share". Your shared key will then appear on the ‘shared keys’ page of your app, which you can view grouped either by ‘people’ or by ‘doors’.