Hi,
I'm new to PowerApps and I'm trying to implement a new function to a Sharepoint list, but I don't know if this is possible or even the most appropriate way.
When a user has multiple packages with different dimensions, I want to give him the ability to add new rows inside a column, like show in the example bellow. I also want the option to delete the added new rows.

I tried some methods I found in this forum and other websites, but I wasn't able to make this work.
There are some key points regarding this implementation. Currently, when a new item is created in a Sharepoint list, through Power Automate, an Excel template sheet is copied, renamed and the corresponding cells are automatically filled with the data from each column. But since I would be creating fields inside a column, is there a way to properly separate this data so it can be used to fill individual cells in a Excel sheet? Because I believe in a case where there are 3 different packages, it would fill all 3 numbers inside the same cell, so maybe my idea isn't ideal for my goal.
I hope I was able to properly explain my needs. I would be very thankful if someone could help me to solve this problem.