Outline By Customer Name

[mrmmickle1]

I have the following code that I have previously used to outline data based on "" values. I was lucky enough to search a forum and modify the code a little bit to get it to work for my needs. However, I am unsure that I understand the code. I thought I could simply change a few numbers to make it work but, I am having trouble. The code is as follows:

Sub GroupData1()
Dim i As Integer, LastRow As Integer
LastRow = Cells(Rows.Count, 2).End(xlUp).Row

For i = 2 To LastRow

    If Not Left(Cells(i, 2), 3) = "" Then
        Cells(i, 2).EntireRow.Group
    End If

Next i
End Sub

I have attached a file that has a data sample. I am trying to outline the rows below "" in column E. This way the customer name would be the only row showing when the data is collapsed. Is there an easy way to modify the above code to meet my needs? In addition I would like to try to understand the code more thoroughly. Could anyone add comments to the code in order to help me understand it in full

https://www.youtube.com/channel/UCnxwq2aGJRbjOo_MO54oaHA
https://www.youtube.com/watch?v=jTmVtPHtiTg&lc=Ugy_RiNN_kAqUvZ8W994AaABAg
https://www.youtube.com/watch?v=QjEWAJ3d-jw&lc=UgxJLVpwY8fIla7G-pN4AaABAg.9BLeCWVhxdG9wgNsaS3Lp1
https://www.youtube.com/watch?v=QjEWAJ3d-jw&lc=UgxJLVpwY8fIla7G-pN4AaABAg.9BLeCWVhxdG9wgR1EPUkhw
https://www.youtube.com/watch?v=QjEWAJ3d-jw&lc=UgxJLVpwY8fIla7G-pN4AaABAg.9BLeCWVhxdG9wgNe_XC-jK
https://www.youtube.com/watch?v=QjEWAJ3d-jw&lc=UgxJLVpwY8fIla7G-pN4AaABAg.9BLeCWVhxdG9wgNPOdiDuv
https://www.youtube.com/watch?v=QjEWAJ3d-jw&lc=UgxJLVpwY8fIla7G-pN4AaABAg.9BLeCWVhxdG9wgN7AC7wAc
https://www.youtube.com/watch?v=bs-urI_o8jo&lc=UgyBACXgNY4j_cHgH5J4AaABAg.9oTkVdzfqfm 9wlhQrYJP3M
https://www.youtube.com/watch?v=bs-urI_o8jo&lc=UgxYgiEZuS9I3xkjJv54AaABAg
https://www.youtube.com/watch?v=DVFFApHzYVk&lc=Ugyi578yhj9zShmhuPl4AaABAg
https://www.youtube.com/watch?v=GqzeFYWjTxI&lc=UgxvxlnuTRWiV6MUZB14AaABAg
https://www.youtube.com/watch?v=_8i1fVEi5WY&lc=Ugz0ptwE5J-2CpX4Lzh4AaABAg
https://www.youtube.com/watch?v=0ltJS7uHfK4&lc=UgxoHAw8RwR7VmyVBUt4AaABAg. 9C-br0lEl8V9xI0_6pCaR9
https://www.youtube.com/watch?v=0ltJS7uHfK4&lc=Ugz5DDCMqmHLeEjUU8t4AaABAg. 9bl7m03Onql9xI-ar3Z0ME
https://www.youtube.com/watch?v=0ltJS7uHfK4&lc=UgxYnpd9leriPmc8rPd4AaABAg. 9gdrYDocLIm9xI-2ZpVF-q
https://www.youtube.com/watch?v=0ltJS7uHfK4&lc=UgyjoPLjNeIAOMVH_u94AaABAg. 9id_Q3FO8Lp9xHyeYSuv1I
https://www.reddit.com/r/windowsxp/comments/pexq9q/comment/k81ybvj/?utm_source=reddit&utm_medium=web2x&context=3
https://www.youtube.com/watch?v=bs-urI_o8jo&lc=UgxYgiEZuS9I3xkjJv54AaABAg
https://www.youtube.com/watch?v=bs-urI_o8jo&lc=UgyBACXgNY4j_cHgH5J4AaABAg.9oTkVdzfqfm 9wlhQrYJP3M
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https://www.youtube.com/watch?v=LP9fz2DCMBE&lc=UgzbPgJUMCztIOQDym14AaABAg
https://www.youtube.com/watch?v=LP9fz2DCMBE&lc=UgzbPgJUMCztIOQDym14AaABAg. 9wdo_rWgxSH9wdpcYqrvp8
ttps://www.youtube.com/watch?v=bFxnXH4-L1A
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https://www.youtube.com/watch?v=bFxnXH4-L1A&lc=UgxBU39bTptFznDC1PJ4AaABAg
ttps://www.youtube.com/watch?v=GqzeFYWjTxI
https://www.youtube.com/watch?v=GqzeFYWjTxI&lc=UgwJnJDJ5JT8hFvibt14AaABAg
https://www.youtube.com/channel/UCnxwq2aGJRbjOo_MO54oaHA