title: Userform input field to accept ONLY minutes and seconds
body: <p>I have searched for this code and only found input for hours, minutes and seconds and have tried to adapt the found code to no avail.</p>
  
  <p>I want an entry field in a userform to accept 3 or 4 digits as an input of which the first 1 or 2 will be assigned to the minutes and the last 2 digits assigned to the seconds of a minutes:seconds cell in a spreadsheet?</p>
  
  <p>eg. User inputs 0523 which is transferred to a cell in excel as 5:23
  or User inputs 523 which is transferred to a cell in excel as 5:23</p>
  
  <p>Thanks</p>