First of all create a text file on your PC. Write there all your tweets. One line: one tweet.
You can use long URLs there, Blogomator will shorten them automatically
Then login to Blogomator and go to “My Twitters” section. Fill your Twitter username and password there
Go to “My Articles” section of Blogomator and upload file(s) with tweets. We recommend to create a separate folder for all your Twitter files

After you’re done, select checkbox near uploaded file and hit “Twitter” button. You will see confirmation screen.

Now select desired posting schedule. For example if you want to have exactly 4 tweets per day, then select “post 4 — 4 lines every 1 to 1 days”
If you want one – two tweets every day, then select “post 1 – 2 lines every 1 to 1 days”
If you want 5-10 tweets randomly posted during one week, select “post 5 – 10 lines every 1 to 7 days”
Hit “Publish” button, you will see exact schedule for your tweets. You can change dates or cancel posting of some tweets

Hit confirm and you are done
Later you can check history and scheduled tweets in “My Blogs” section of Blogomator