Adding the More Tag in your posts is quite simple.
1) Start by writing a new post or edit an existing one.
2) Once you’re done writing, you will need to click on a line where you would like to end the summary and show a read more link.
3) Next, click on the More Tag button from the toolbar.
You will notice that a dashed line with ‘More’ in the center will appear in your post. You can insert the more tag anywhere in the post, like in the mid sentence, in the middle of a paragraph or after the first paragraph.
If you are using the text editor, then you can use the ‘more’ button in the toolbar or manually enter the more tag like this: