The tab Marketplace is a gathering point for all the additional services that are available in the system. 

You can search by category or in a free text field on the differente services. All columns that have a green checkmark are activated. To deactivate, click on that box and select deactivate.

In this example have we search for the category Functions and we are going to deactivate the function Approval. We click on the box for approval. 

We choose to Deactivate service. 

If you want to activate a service. Choose the service and then click on Activate service.