Hi @Atlantis1
For your future reference this forum here is more inclined towards Power Automate Desktop.
Regarding the requirements I am not sure if I fully understood it but will give a try.
I guess you would like to dynamically search for T1 and enter the details in Order column next to T1.
If so, you could use the Find functionality.
Let's search for 2 in Column A and write something next to it in Column B.

After launching the Excel, Find for 2.
This will return the RowIndex and ColumnIndex on the cell it was found.

Since our Search data is in the 1st column, we need to add 1 to the column index for writing the result into the next column ie; Column B

After the flow finishes it will write TWO next to where it found 2.
