Change your blog using gadgets

You can add gadgets to display your blog's archive, display labels in a list on every page, or put your profile on every page. Here are the following steps needed to do so.

1. Sign in to Blogger.
   
   
   
2. Choose the blog to update.
   
   
   
3. In the left menu, click Layout.
   
   
   
4. In the area where you want to add something, click Add a Gadget. 
   
   
   
5. In the window that opens, choose the gadget to add and click Add .
   
6. In the lower left, click Save.
   
   
   
7. Optional: To change the settings on a gadget, click Edit.
   
   Reference Link: https://support.google.com/blogger/answer/176245?hl=en&ref_topic=6321969