You can add Rows and Columns to the Reserved Sections. Kindly follow the below mentioned steps to add Rows and Columns to added sections.
Click on the option 'Add Section' under the Manage sections Tab and select the option 'Reserved Section'
You will get a pop-up window to add Reserved Section. You will have options to Name the section and add desired number of rows and columns to the section.
To add rows to a particular section. Enter the number of rows in the box at the bottom that you want to add and click on the addition (+) sign.
To add columns to a particular section. Enter the number of columns in the box at the top right hand corner that you want to add and click on the addition (+) sign.
Note : Section Name is a Mandatory field.