I want to add a row with one column.

how to set colspan?
![image](https://user-images.githubusercontent.com/128041442/225590567-e22705f0-4af5-43b4-91e8-38cc8bc5f3f8.png)

Now grid
<img width="422" alt="image" src="https://user-images.githubusercontent.com/128041442/225591042-a2b6aec1-277a-4948-b594-d54d1da86a9a.png">

