Transfer cells range to another sheet if first cell of destination range is empty

Howdy all!

I've got a project which is quite complex (at least for me). So, I'm taking it one step at a time
The first step is creating a macro evoked by a push button (which is already in place) which will achieve the following:

Sheet1 is the source worksheet
Sheet2 is the destination sheet

With the push of the macro button (present in Sheet1) I want to calculate formulas in specific cells (B4, C4, B6, L61) AND
copy the cells' values to specific cells in Sheet2 (M10, N10, O10, S10) BUT only if the FIRST cell of this range (i.e. M10) is empty. If it contains
data then paste the values to the cells below (M11, N11, O11, S11) etc etc. The "check for empty cell" routine is necessary because the macro will be evoked

continuously (push the button on Sheet1 - Calculate - Transfer to empty cells on Sheet2 - Loop)

Any help will be greatly appreciated!
Thanks!

Does this help?

Sub kopapa()
If Sheets("Sheet2").Range("M" & Rows.count).End(3)(2).Value = "" Then
    Sheets("Sheet2").Range("M" & Rows.count).End(3)(2).Value = Sheets("Sheet1").Range("B4").Value
    Sheets("Sheet2").Range("N" & Rows.count).End(3)(2).Value = Sheets("Sheet1").Range("C4").Value
    Sheets("Sheet2").Range("O" & Rows.count).End(3)(2).Value = Sheets("Sheet1").Range("B6").Value
    Sheets("Sheet2").Range("S" & Rows.count).End(3)(2).Value = Sheets("Sheet1").Range("L61").Value
End If
End Sub

It assumes you already have data in M9 on sheet2.

Well, I think it does!
I put it in, I checked and everything seems to be OK.
So many thanks for your precious help!
First step is (more or less) gone... 99 to go!

You're welcome. Glad to help out and thanks for the feedback. In accordance with Forum Rule No. 9, please mark this thread as solved. Also, good luck on the other 99.

Originally Posted by JOHN H. DAVIS

You're welcome. Glad to help out and thanks for the feedback. In accordance with Forum Rule No. 9, please mark this thread as solved. Also, good luck on the other 99.

Hmm, I think I rushed a little bit.
I seemed to work OK BUT when I try to clear the destination cells (either manually or by code) so that I can start over, it seems to glitch...
It starts again in M10, copies the first two cells (B4 and C4) to M10 & N10 and ignores the other two (B6 and L61)...
Any thoughts?

Can you provide a sample?