So, to enable the pages widget you will have to limit the no. of posts in your blog's first page. You should have the following features in your blog page.The required blog features are as follows:
- Your blog may have the 'read more' tag added in it already. Even if you don't have it you should have read the adding ' read more' tag on the blog.
- Still if you have any problem in the working of the blog tag or 'page tag'. You should try going in the posts option in the layout area of the blog design.
- After that you may try limiting the no. of posts per page. If you are still not able to do that it means that your bought or 'borrowed' template doesn't allows you to do so that means that you have to choose the other option.
- Now in the condition of templates , you should always remember to buy only the template that helps you by already having that feature. Well nothing to worry because most of the posts already have taht feature.