A grid can contain a mixture of various types of inputs such as radio buttons, check boxes, numeric inputs, etc.
Setup a one row grid with your 3 or 4 columns and label each column accordingly.
Make the grid direction equal to column.
Now click on the first column member in your list and click edit. A new window will appear which enables you to select the input type and apply the various settings.
Repeat this step for all columns.
Now you have the look of the grid.