How to Allowed Gadgets Not Allowed area Like Cross Column 2

Gadgets Not Allowed - This area is called the Cross Column and the screenshot below shows there is no option to place gadgets in the cross column :
cross column gadgets blogger
Gadgets Allowed - Once we change the code you will have a brand new 'add a gadget' area :
Add A Gadget Cross Column
Placing gadgets in the cross column
Step1:
Go to Blogger Dashboard than go to Template/Theme than click on the Edit HTML button:
Step2:
Click anywhere inside the code area and press the Ctrl+F keys to open the blogger search box. Type Showaddelement='no' following inside search box and press enter to find it.
<b:section class='crosscol' id='crosscol' showaddelement='no'/>
Step3:
Change Showaddelement='no' to Showaddelement='yes' as shown below :
<b:section class='crosscol' id='crosscol' showaddelement='yes'/>
Break down the change you made - There may be other areas you can add gadgets to your layout that are blocked. The code I changed is 'showaddelement' which breaks into 'Show Add Element'.Search your template for every occurrence of 'showaddelement' and switch 'no' to 'yes'.