How do I add a new password to my ichain?

Hello, Colorado-skier.

Are you referring to your iCloud Keychain? If so, let's start by taking a look at the article that was linked to your posting: Set up iCloud Keychain - Apple Support. At the bottom of the page, it explains: "iCloud Keychain stores your saved passwords so that you can view or change them at any time. Learn how to find your saved passwords on your iPhone, iPad, or iPod touch. You can also find your saved passwords on your Mac." Your passwords are added to iCloud Keychain when you are logging into the website or application and asked if you want to save it.

Let us know if we can help with anything else at all or if this doesn't settle your issue. Thanks and have a fabulous day!