Hello @jessicapa009,
My name is Henry and I am happy to assist with your inquiry, and appreciate you contacting LastPass Support!
You can't join a Teams or Business account while you are on a Families subscription. If you are a member, you can ask to be removed from the family group to the family owner.
If you are the owner, you can transfer the ownership to other member and ask to be removed of the account or delete the family group depending on your preferences.
Please let me know if this worked or if further assistance is required.
Thank you,
Henry | Customer Care