Copy paste from Excel to widows another application/program with tab

I have an excel sheet and I have to copy multiple cells data from it and paste it to windows another application in different tabs.

Currently if I copy multiple cells from excel and paste it in another application it paste on single place but I need all cells to be pasted in different tabs.

Can someone help with this?

Different tabs like when we sign up in a website we need to fill a form

I have some data in excel and have to fill a sign up form If I copy multiple cells and paste over there it will be paste in one place not in different tabs

I have found a way to do this with Wscript .VBS file, but its working only on browsers, excel and notepad.

However, it gives an error when used on an application installed on my system. The entire text is entered in a single cell. sendkey "{TAB}" doesn't work in this application.

Does the tab key work on this application if you hit it manually to fill in the text? What is the application?