Looking for a new method to create 'check-in' and 'check-out' system - vba

Question

I am currently working on a database for a small building with a large number of HDDs and the system I have made so far works exactly as my employer desires it to.
My current problem is with some VBA coding using macros to sign in and sign out each hard drive, the hard drives have a row each with a 'check in' and 'check out' button at the end. At current moment the coding works for both of these buttons but I have to write out the code for every single button both 'check in' and 'check out'.
Is there a way to convert the location of the button into a string which would then add itself into the coding and I can put in some sort of array that will auto locate the output of each button for me?
The macro is a simple .Show statement.
My excel sheet is illustrated below. Most of the current cells are programmed with formulas as this system needs to be fairly automated for the less skilled computer users.
Edit:
After clicking the button my initials are added to the end of current time/date. This needs to happen for many buttons all results being in different cells.

Answer 1

My recommendation would be to avoid using a button, and instead override the SelectionChanged event handler for the worksheet. Change the buttons to formatted cells, which when clicked will perform the action you desire.
First, configure your UserForm to return a value. One way to do this is by placing the following code into the code-behind for the UserForm:
Public Property Get Initials() As String
Initials = txtInitials.Text
End Property
Public Property Let Initials(ByVal sInitials As String)
txtInitials.Text = sInitials
End Property
Private Sub btnOk_Click()
Me.Hide
End Sub
Next, add the following code to Sheet1:
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim sInitials As String
Dim sDate As String
Dim sTime As String
Dim frmInitials As InitialsForm
If Target.Column = 13 Then
Set frmInitials = New InitialsForm
frmInitials.Show
sInitials = frmInitials.Initials
Unload frmInitials
sDate = Date
sTime = Time
Cells(Target.Row, 6).Value = sDate + " / " + sTime + " " + sInitials
End If
End Sub
When the user clicks on a cell in column 13 (M - "Check Out"), a userform will be displayed asking for the user's initials. Once they have entered them and pressed the OK button, the initials will be added to the end of the timestamp and inserted into column 6 (F) of the same row.