CREATE TABLE [Members]
(
    [MemberId] int NOT NULL IDENTITY
)

CREATE TABLE [Studios]
(
    [StudioId] int NOT NULL IDENTITY,
    [HeadId] int,
    [OwnerId] int,

    CONSTRAINT [PK_Studios] PRIMARY KEY ([StudioId]),

    CONSTRAINT [FK_Studios_Members_OwnerId]
         FOREIGN KEY ([OwnerId]) REFERENCES [Members] ([MemberId])
            ON DELETE SET NULL,
    CONSTRAINT [FK_Studios_Members_HeadId]
         FOREIGN KEY ([HeadId]) REFERENCES [Members] ([MemberId])
            ON DELETE SET NULL
)