How to create an Alternate profile?

It is pretty much the same way that editing manually the character equipment.

Go to My characters > Edit > Equipment tab.

Use the Quick form to create an alternate profile. Set a name, the level and select whether it will be visible to others. The alternate profile will be created on the base of your main.

You can change any item or augment you want from your inventory and bank moreover any item.

All your stats on the box will change in real time to let you appreciate the impact of your gear.
You can display your alternate profile by clicking on its name in the left menu.

In your character profile, click on the little icon on the top right of the identity card to view the list of your alternate profiles. You can switch to an alternate profile and view changes highlighted for gear and stats.