Help required to separate the text

Hi dufoq3 

Thank you! I am sharing the actual data and the results with the queries.

Source Data: (Two Months)

Query Steps applied:

let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],

#"Filtered Rows1" = Table.SelectRows(Source, each ([Source.Name] = "Dec23-555.pdf" or [Source.Name] = "Nov23-555.pdf")),

#"Reordered Columns" = Table.ReorderColumns(#"Filtered Rows1",{"Description", "Source.Name", "Column2", "Utilisation", "Column4", "Rate", "Amount"}),
SourceColNames = List.Buffer(Table.ColumnNames(#"Reordered Columns")),
StepBack = #"Reordered Columns",
ReplacedValue = Table.ReplaceValue(StepBack, null, null,
(x,y,z)=> if List.Contains({"", "-"}, x) then null else x,
SourceColNames),
AddedIndex = Table.AddIndexColumn(ReplacedValue, "Index", 0, 1, Int64.Type),
Ad_GroupHelper = Table.AddColumn(AddedIndex, "GroupHelper", each if (try Text.Range([Description], 2, 1) otherwise null) = "-" then [Index] else null, type text),
#"Changed Type" = Table.TransformColumnTypes(Ad_GroupHelper,{{"GroupHelper", type number}}),
FilledDown = Table.FillDown(Ad_GroupHelper,{"GroupHelper"}),

GroupedRows = Table.Group(FilledDown, {"GroupHelper"}, {{"Description", each Text.Combine([Description], "-"), type text}, {"FirstRow", each Table.FirstN(Table.SelectColumns(Table.FillUp(_, SourceColNames), List.Skip(SourceColNames)), 1) , type table}}),

#"Changed Type1" = Table.TransformColumnTypes(GroupedRows,{{"GroupHelper", type number}})

in
#"Changed Type1"

Results: