For info, if the buttons are greyed out it means that you don’t need to lock the service in order to edit it. So you could have modified the service without having to change the extended setting watt.server.ns.lockingMode=full.
The setting is provided to allow you to distinguish an environment dedicated to a single developer (no locking) or shared where you want to avoid multiple developers modifying the same service at the same time.
So to clarify if your development environment is a shared environment used by more than one developer enable the setting as suggested.
Generally we recommend that you should use a dedicated IS for each developer aka Designer Workstation. It makes version control much easier as each developer can choose when to commit/pull code changes from the code repository.
I hope the additional info is useful.
Integration & Microservices