Subscription

Rosey0070:

360 with ultimate plus

Norton 360 program protection is up to the number of devices, for any user.
Norton 360 with LifeLock plans - Identity Theft Protection features is per person, per membership. 

Norton 360 program protection are available to any user/s you choose up to the number of plan devices. 
Norton 360 - 10 devices means up to 10 devices, any person/s. 
LifeLock Identity Theft Protection features is per per person, per membership. 

Protect the whole family by adding them to your Norton plan
[...]

• Add an additional member to your plan ›
• Enroll a member whose subscription is already included in your plan ›

Please note that each adult family member must activate credit services with their own email address.

https://support.norton.com/sp/en/us/norton-identity-safe/current/solutions/v126242011 

Detect and fix Identity thefts with Identity Theft Protection

Your identity is worth protecting. Identity theft happens when criminals use your personal information to open lines of credit, obtain medical care, file for a tax refund, and more. Norton now helps protect your identity.

LifeLock Identity Theft Protection does not cover businesses. Our technology and service is designed to help protect individuals with social security numbers and other personal identifiable information, which businesses do not have.

No one can prevent all identity theft or cybercrime.

• Set up LifeLock Identity Theft Protection ›
• Add information to be monitored ›
• Set up Alerts ›
• Install the LifeLock for Norton 360 app on Android ›
• Install the LifeLock for Norton 360 app on iOS ›

https://support.norton.com/sp/en/us/home/current/solutions/v134911435 

My understanding:
Norton 360 with LifeLock plan/LifeLock plan for LifeLock Identity Theft Protection...is that you'll need an additional LifeLock membership, per additional person. 
Please contact Member Services to discuss your options to add another LifeLock membership. 

Caveat: I do not have Norton 360 with LifeLock plan nor stand-alone LifeLock plan.

Rosey0070:

So I need a family plan with one additional person?

Or, you may be able to add an additional member. 
Please see Permalink.

You may discuss your subscriptions/options with Norton Support. Contact Norton Support.

Norton Community does not have access to your Norton account, subscription details nor payment method. 

Caveat: I do not have Norton 360 with LifeLock plan nor stand-alone LifeLock plan.