i have this code downloaded from other site, but im not sure how to create a Pause and Resume function for this timer

all i have is the code for pause.
Code:
tmrWait.enabled= false

'--------ACTIVATE TIMER
Private Sub cmdstartTimer_Click()
Dim fields() As String
Dim hours As Long
Dim minutes As Long
Dim seconds As Long

  
    fields = Split(txtduration.Text, ":")
...