Welcome to the Community, @MissyI. I'd be glad to show you where the Gear icon is. 

This icon is located in the upper right of the screen, in between the Magnifying Glass icon and the Help icon. I've included a screenshot to serve as a visual reference:

For additional information on adding an Accountant user, I recommend the following article: Invite or remove an accountant.

Should you have any questions about this, or need anything, I'm a post away. Hope you have a wonderful weekend.