Remediation task such as deleting files or preventing execution

**Environment**
- How did you install GRR? From release
- What GRR version are you running?: GRR Version 3.4.2.3
- What operating system does the GRR server run on? Ubuntu 18.04
- What operating system does the affected GRR client run on, if applicable? Windows

Had few questions
1.Can I perform remediation efforts utilizing GRR such as deleting files and preventing executions?
2.When I have GRR server running in EC2 or Azure or GCP ; what configurations such as ports and certificates would I require to perform to enrol local clients?

Thanks and Regards
Tej Gandhi