Remove Member
From the the Member List in the Shared Vault, click the the More More button beside the Member in question.
Click the the Remove link.
A Remove Member Access screen is displayed.
Click Yes to Remove the Member from the Shared Vault. The member is removed from the Shared Vault.
Alternatively, click No to cancel the operation.
Note: similarly to the Leave Shared Vault function, this is only possible if the Member is not the last remaining member with Owner access.