Just like nodes, relationships can also have properties.
To add a relationship property, select the “Relationship” tab on the left hand side of the screen and then select the relationship.
Then click the plus (“+”) button to the right of your current columns to create a property.
A pop-up will appear where you can name the property and select its Type.
Fill in the data for the relationship property by double clicking the cell.
A popup will appear where you can input the property data.
Now, if you go back to the normal Table view and mouse over the relationship, you can see a list of properties along with their values.