Cannot modify Consumer Proxy configuration

Hi,

We have developed a BPM process in NWDS on SAP NetWeaver 7.3

One of the tasks in the process can take quite some time before it receives a response from the backend. Since the 'Max waiting time for HTTP response in milliseconds' is set to 60,000 it will throw a socket read timeout exception after 60 seconds.

I would like to increase this value, but I was not able to modify the settings in the Consumer Proxy's 'Configuration' tab since the edit buttons are disabled:

Is a deployed BPM process simply not modifiable fro NWA, or should I change this timeout somewhere else?

Any help is highly appreciated!