Put this recipe into Soapcalc. Each number in the list below refers to a section in the Soapcalc form.
1. Type of lye: NaOH
2. Weight of oils: Ounces
3. Water: Click the button by Lye Concentration. Type 30% in the box to the right of Lye Concentration.
4. Superfat: Leave at 5%.
4. Fragrance: Either leave at 0.5 oz/lb or change to 0.66 oz/lb (The default is 0.5 oz/lb. Wellness Mama's recipe uses 0.66 oz/lb. Pick one and go with it.)
5. Find "Coconut Oil, 76 degree" in the list of fats. Double click on it. It should now appear in the list to the right in Section 6.
6. Click on the round button above OZ because you want to enter your recipe in ounces not in percentages.
6. Enter 10 in the green box below OZ and to the right of Coconut Oil.
5 and 6. Find "Lard, Pig Tallow" in the list of fats. Double click on it to add that to your recipe. Enter 10 oz as the weight.
5 and 6. Find Olive Oil and put 10 oz of olive oil into your recipe.
5 and 6. Repeat with 6 oz of castor oil.
7. When you are happy with the recipe, click Calculate Recipe.
7. Next, click View Recipe. A new window should open in your browser and you should see something that looks like the pic below. Your numbers may be a bit different than mine if you chose to use different numbers for the superfat, lye concentration, or fragrance dosage. The result is your new recipe using 10 oz lard instead of 10 oz tallow. The lye weight you should use for this revised recipe is on the Pink line toward the top.
Hope this answers your questions....