On the card for the page that you are configuring, select More Actions > Configure.
Click Advanced > Look and Feel.
Scroll down to the Customization section and add your custom script.
If you are working with a Link to URL page type, specify _blank in the Target field to open the external link in a separate tab when the user navigates to the page.
Click Save.
For more information, see Infor Rhythm for Commerce Administration Library (Cloud) and selectAdministrator > Web Shop Content and Functions > Extensibility options through custom scripts.