A vault is a separate account that stores your crypto more securely.
Set up a vault:
Sign in to Coinbase.com
Select My Assets.
Choose the crypto asset you'd like to store in a vault.
Select See balance summary.
Select Vault then choose Create a vault.
Choose the number of co-signers.
Enter co-signer email addresses and select Invite.
The email addresses can be owned by you or others. The email doesn't need to be connected to a Coinbase account. The invited co-signer can create a Coinbase account later and then accept the invitation.
Accept the invitation sent to your secondary email address to verify your account.
You'll be directed to sign in to your Coinbase account connected to the co-signing email addresses, or create a new account if none exists. Once done, you can send correlating crypto to your vault. Learn more about Vaults.
Only the master account holder can request a withdrawal, but it requires 2, 3, or 5 approvals. The Vault owner is always an approver. Designate only trusted individuals as co-signers.
Note: There’s a 48-hour waiting period after the vault is created.