You can just add the softgels to your pet's canned / home made food, hide it in a treat, or cut open the softgels and drizzle it on kibble or any food.
You can also give it to your pet as a 'pill' - hold your pet firmly (with cats, wrap them in a towel!), carefully open the mouth, then push the softgel to the back of the throat where they cannot reach it with the tongue, and they will swallow the softgel.