Depending on where you are working, you maybe are looking for what is described at the bottom of https://github.com/binder-examples/jupyterlab#create-a-binder-link-that-points-to-jupyterlab ?
If you need fancier control, you’ll want to start exploring jupyterlab workspaces. See here. Be aware I’ve seen spotty handling of workspaces in either certain browsers or on strongly firewalled networks the last few days. May have been a fluke, but don’t assume not working based on testing from one computer.