Really hoping someone can point me in the right direction, due to moving to office online I am trying to replace old macros in a worksheet with scripts and have become stuck as completely new to this.

I am trying to save a script to apply a number format to whatever cells I have selected on the worksheet. Recording the script is easy, but it only applies to whatever cell I am in at the time. However, I could be in a different cell or I may need to apply the format to a range of cells.