Fill stat title, divisions levels, stat attributes, number of reincarnations and permanent points. (see picture below)
After this press “Save profile” button. You can modify any stat values any time.
If after some experiments you don't need anymore your stat you can delete it by pressing “Delete” button. All units designed in this stat will be lost. I suggest don't delete your not empty stats because in this case other people can find and look your designs.
Now you need to create unit design.
Choose unit you want to design, unit MK, level, enter unit title (if you want, you can fill this fields later).
Press “Save unit” button to save unit design parameters for start equip your unit.
Now you can change unit parameters (MK, level) and equip it.
To put some equipment on your unit you must choose equipment category by clicking on Tab then click on row with equipment. If you see any red numbers in a row you can't put this equipment on your unit (on picture below Personal Clock have red Space value this meaning that your units have not enough space).
While you equip your unit in Info fieldset you can see unit parameters: Health, Armor, Damage, Cooldown, Range and others. Most of these fields have “hints”: hold your mouse cursor over this field to see comment.
After you put on unit all equipment don't forget press “Save unit” button.
You can copy link to your unit design from browser address bar of from bottom page and send to anyone. This guy can open your link in his browser and look at your unit design (don't worry: he can't change your stat or design).
When you compleate one unit design you can design next unit: choose “create new...” in select “Units” and go Step 2 - 3 again (don't forget save your unit design!).
If you want to create new stat you must choose “create new...” in select “Profiles” and then repeat Steps 1 - 3.