Make userform stay on top of all windows when macro is fired

[Silver]

Hi,

Excel newbie here.

I came across a code that makes userform pop-up at specified times in a column.

Need assistance as below -

1) When the macro is fired at the specified time, I want the userform to pop-up and remain on top of all applications.

2) Once the userform pops-up, I need a button on the userform which, when clicked, will close the pop-up window and take me back to the workbook from where the macro is run.

Have attached sheet for reference.

Any assistance will be appreciated.