Enable Slack integration only for a specific project. Not all of them


I recently enabled the Slack integration on my gitlab installation.
After testing it the enabled events (push, merge request, etc.) where posted in the configured slack channel.
However, the events were triggered from within every project on my server. As we only want to discuss a specific project it does not fit our workflow. Thus, I am looking for a method to disable the Slack integration for every project except the one that we want .

Is this possible? And If so, can somebody please guide me to the necessary settings?
Thank you in advance.