How to log another Apple ID in my iPhone settings?

How do I lot [log?] of out 1 iCloud and into another account in my phone settings?

You will need the password and the Apple ID. If the device is yours you will already know these details.

Follow the instructions given by Apple in Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV, or Mac

1. Go to Settings > [your name]. 
2. Scroll down to the bottom.
3. Tap Sign Out.
4. Enter your Apple ID password and tap Turn Off. Forgot your Apple ID password? 
5. Turn on the data that you want to keep a copy of on your device.
6. Tap Sign Out.
7. Tap Sign Out again to confirm that you want to sign out of iCloud.

Then sign in with the credentials of the other Apple ID: Sign in with your Apple ID

1. Open the Settings app.
2. Tap Sign in to your iPhone.
3. Enter your Apple ID and password.
4. If prompted, enter the six-digit verification code sent to your trusted device or phone number and complete sign in.