Add a table to your timeline by following these steps:
In the "Edit" tab of your timeline, click on any timeline item that you wish to add a table to.
Click on the table icon, next to the insert image icon.
Hover over the dropdown to select the number of rows and columns you wish to insert.
One important thing to note: occasionally having too many tables in your timeline may cause the spacing to be misaligned in your final PDF. If this is the case, try removing one table at a time and refreshing your PDF. It may be that only one table is causing the misalignment and organizing that table's information in a different way will resolve your trouble.