How to put a single cell in a row despite having more columns?

[pcroland]

I can't find the related options in the documentation, but I'm guessing it's possible.

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃            Output          ┃
┡━━━━━━━━━━━━━━━━━┳━━━━━━━━━━┩
│ format          │ DDP      │
│ bitrate         │ 256 kbps │
│ output channels │ stereo   │
├━━━━━━━━━━━━━━━━━┴━━━━━━━━━━┤
┃            Input           ┃
┡━━━━━━━━━━━━━━━━━┳━━━━━━━━━━┩
│ input channels  │ 5.1      │
│ bit depth       │ 16       │
│ delay           │ 0.000 ms │
└─────────────────┴──────────┘

I would like to setup a table like this.