Hey there! Please edit the title of your post and make it more specific. Titles such as 'Help' give others no indication of what might be going on. Thanks!
"Wiki Representatives are part-time staff members assigned to specific wikis. They are here to support your wiki's community and help it grow and thrive, as well as serving as a liaison with a direct line of contact to full-time Fandom staff."
No, you cannot make someone into a Wiki Representative. That is a Fandom-side role and only staff can promote a person to that role (after following due procedures of course).