Are you using a Computer?
From the website, click on your name at the top right corner of your registry to access the account drop down menu > Settings > Registry Info. Click the box beside "Invite my partner to edit our registry." Then you can then enter your partner's email to invite them to edit the registry with you.
Are you using the app?
Go to the menu bar (at the top left side of your screen) and select Registry > Partner Info. Simply enter their information and we'll send them an invite so they can manage the registry alongside you.