0v or Ground

I have two small circuits I want to run off the same small centre tapped transformer, one circuit needs +15V 0V -15V & the second circuit needs +15V & Ground.

For the second circuit can I use 0V for ground or can I just ground the centre tap & use
+15V ground -15V for the first circuit.

The IC for the second circuit does specify to use Ground.

Or is their a better way?

Cheers

I worked out a way to do this, I wasn't thinking about it correctly.

Cheers