DB4S v3.11.1 [built for x86_64-little_endian-llp64] on Windows 10 (10.0) (winnt/10.0.10240) [x86_64]
using SQLite Version 3.27.1
and Qt 5.11.3
Unfortunately, your template is empty - just the title of 'how to insert tables'.
What do you need help on?
Have you created a new database and now don't know what to do?

Click on the 'database structure' tab, and click on 'Create table'

In the 'edit table definition' dialog, enter the table name and then define the fields for the table.
I don't know what you know about database and what you don't, do don't want to tell you what you may already know. There are some simple rules though. Not hard-fast rules, but 'best practices'. Feel ftree to ask 'why?' if you're bored.
There are probably other rules, but I'm not 100% sure what issue you've got...
Click on OK and your table is saved.

You mention 'insert' tables - do you mean from CSV files? SQL files? Bananas?
@MrunaliniShiraganvi I hope you were able to solve your doubt with @chrisjlocke's anwser. Otherwise, let us know.