Automation tool script to move mouse enter inputs on LINE desktop application

I want to automate stuff using the following script [login to view URL] Here is a video of what I want to automate: [login to view URL] Essentially here is the step: 1. I have a list of LINE usernames that needs to be inputted as a contact LINE messenger 2. Need to move the mouse to the add contact menu and then input this username into the text field 3. Repeat using a new username After all of the username is inputted, we want to message each of these new contact, from a text that I have. The text is the same for all contacts, I will provide the text as well. After all of these is done, we want to remove the contacts from our LINE , since LINE only allows 500 contact max. Then we repeat the same process again.