Am so sorry your question is not clear, but if you mean default "My Webspaces", then NO as those records are dynamically generated. They are the last 3 opened while as admin!
When logging in to the Plesk admin panel, you are on a webspace corresponding to the first domain registered. You can create several webspaces associate with other domains. At the top of the admin panel, there is a dropdown providing all domain registered. From there you can swith from a domain to another My question is, is it possible to change the domain you are on when logging in, or it it always the first domain registered.
That feature is already there depending on the plesk view you are using. You would have to change to the Service Provider view to see the last edited sites ..How to here-in below: