If you are an admin of your team, you can go to app.yacchat.com or click the Manage My team link on Yac.com.
Log into your account and enter the 6 digit PIN we send to your email.
In the My Team tab, find the teammate you wish to remove.
Click the More Icon (looks like 3 dots) to the right of that teammate.
Select Remove from the overflow menu.
Signing into Admin
Removing a Teammate