6) Here you have to type categories, you need to add category option.
7) Leave this box empty.
8) You have to select this from your categories xyz or automatic here.
9) You do not have to write anything here, leave this box blank.
10) Enter the URL of your blog’s tag or label here.
11) You can add as many category URLs as you want.
12) Write the URL and click on Add Link
13) Here you can add 7-8 categories such as me, you can do the same with your choice.
14) Last click on Save button.
Now in this way your blog will get the option of categories.
Now the option of adding categories to your blog has been added. If you have any problem adding category option to blog then you can tell me in comment, I will be happy to help you. Yours imdishu … Thank you