You can remove users from a site from either a Site User Management page or the Company User Management page.
Remove a User from the Site User Management Page
To remove a user from a site on the User Management page, log in to MyKinsta and go to WordPress Sites > sitename > Users. On the right side of the user’s row, click the Delete (trash can) icon.

In the modal/pop-up that appears, click the Remove user button to confirm removing the user.

You can also remove multiple users from a site at the same time. Using the checkbox to the left of each user name, select the users you wish to remove. Click the Remove users button.

In the modal/pop-up that appears, click the Remove users button to confirm removing the users.

Remove a User from the Company User Management Page
To remove a user from a site on the Company User Management page, log in to MyKinsta and click your name in the upper-right corner. Select Company settings from the dropdown menu.
Click on Users on the left-hand side. On the right side of the user’s row, click on the Edit (pencil) icon.

In the Change access modal/pop-up that appears, a list of sites the user has access to is shown, along with their access level. Click on the Delete (trash can) icon next to the site to remove the user from that site, and click the Change access button to finalize.

You can also remove multiple users from a site at the same time. Using the checkbox to the left of each user name, select the users you wish to remove. Click on the Remove button that appears near the top-right side of the table and select Remove from sitename.
If you want only to see the users with access to a particular site, use the site filter in the top navigation bar to filter the list by site.

In the modal/pop-up that appears, click the Remove users button to finalize.
