Set up a Hero Set:

1) assign skill points

2) put on equip

3) click "save" on an unused hero set slot

.

Change a Hero Set:

1) have the set you want to change activated

2) change skills or re-skill (if needed)

3) change equip or re-equip (if needed)

4) Click on the currently active Hero Set

5) Click delete

6) Click on the deleted slot and click "save" to re-save the altered set

Thank you