How to do I record this exercise?

sanweb

I found a website that shows different "mommy" workouts that i really want to do but when I type the name of them in the search there is no matches. How do I enter these into my exercises? here are the names of them:

Chair Dips
Chair Squats
Butterfly Abs
Oblique Crunches
Modified Push-Ups
Standing Hip Extension
Step-Ups

By the way I want to stick wiht this for right now because it really suits my lifestyle. So please only helpful answers! Thank so much!