For support relating to jobs, problems with submission scripts, applications, and issues with HPC software in general:
ICT ASK Form - RCS Job Problem or Application Error

For requests to install software in the HPC systems:
ICT ASK Form - RCS Software Install Request

Consultation requests for the Research Software Engineering Team:
ICT ASK Form – Research Software Engineering Enquiry

General queries or assistance in cases that do not fit any of the above:
Email rcs-support@imperial.ac.uk. 

Do note that any support request directed to the RCS, submitted as generic requests via ICT ASK, will result in additional delays.