[Theme Horse Support Team]

Hello @jbedel

Sorry! To set the custom links for the featured image it needs code customization as this is a new feature to add in the theme.

To change the rectangular for a square one for the featured images on the Blog main page just use below custom css code and decrease the below 80% digit value as of your requirement.

.post-main .post .entry-wrap:before {
    padding-top: 80%;
}

Thank you!