Editing The Tutor Dashboard

Hi, I added a custum link to the Tutor Dashboard it’s called “Marketing”.

1- I tried many times with the ‘documentation’ to add the icon to this custum link but it dosent work with me.

https://www.linkpicture.com/q/2023.jpg

2- I use the AffiliateWP plugin and i want to add the affiliate page directly in this custum link “Marketing” in the Tutor Dash. right now when the user click in Marketing a new page open. I want to ask if it possible to show the result in the Tuto Dash without going to a new page.

Thank you