Tracking Spreadsheet - Pop Up Window Entry

I am currently producing a work number tracking spreadsheet for the people I work with and wanted to know if there was a way to generate a pop up window that created fields to enter the data for the job being inputted.

I currently have it just a simple macro (below) that enters a new line, adds a sequential number and adds both the date entered, as well as an expected finishing date. It does what I want it to do, however I am looking for it to be fool-proof as the last system was broken as people didn't fill it in fully.

Code:
Sub New_Line()
Range("A4").EntireRow.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromRightOrBelow
Range("A4").Value = Range("A5").Value + 1
Range("C4").Value = Now()
Range("D4").Value = DateSerial(Year(Now()), Month(Now()) + 1, Day(Now() - 10))
End Sub

On the previous system it used a worksheet that did similar, with dropdown menus that auto-filled the sheet as well as inputted into the spreadsheet. That was produced by an old employee that isn't working on it any more.