You can share access to your doors with your phone or by using Nold Cloud in your browser.
To share access with your phone
Select your key
First, select the key you want to share with others. Tap settings and Invite and manage guests at the top.
Select or add a guest
You can add a guest to your contact list manually, or select one from your address book (only contacts with an email address will be visible here). You can select or add as many guests as you wish.
Invite the guest
Tap Next in the top right corner and the green button at the bottom. Wait a couple of seconds and - if everything is correct - you'll be returned to your home screen and your guests have been invited.