To edit single post layout go from WordPress dashboard to Appearance->Customize and then click on Tiam: Single Post Page Settings
In this new screen you have different submenus. Let’s see them in order.
Here you can define the general layout of single post page.
You can choose between different header/title styles, positions, and if you want to hide or show some informations like category, tags and author.
All these options are dropdown box, so it’s easy to test and configure the general aspect of your single post page.
In this section you have only two options: if you want to show at the end of a post the previous or the next post indicator and if visible set the position (middle or bottom). Bottom is the classic position. Middle is particularly indicated for magazines websites.
In this section you can only set if you want or not the author box visible
Here you can configure if you want visible related posts at the end of your post, how many posts you want to see (from 3 to 6) and the section name.
Here you can configure the sidebar in single post page. There are 2 options: as blog or custom.
If you choose “as blog” the single post page take the configuration of the sidebar as defined in blog section.
If you choose custom you can define a custom sidebar (with all options) for your single post page