how do I reset a passcode on icloud

[iMore Question]

looking for 4 digit passcode different from my 4 digit code to unlock my 5s phone

 

[zmey]

On a Mac OS X Yosemite and later choose Apple menu > System Preferences, then click iCloud.
Click Options next to Keychain.
Click Change Security Code and enter a new iCloud Security Code.

On other devices using iOS8+:
Choose Settings > iCloud > Keychain > Advanced.
Tap Change Security Code.