To add a dependency, go to the application screen, scroll down to “External Dependences“

Here you can add in 2 ways:

1 – Creating a new monitoring as a dependency of this application, clicking on the “+” and configuring it.

2 – Searching for an existing application to be a dependency of the current application, using the search field.

Note: The application will only appear in the list if it is of
the internal monitoring type (through the agent installed in your
environment)