Private Omics workflow not working as parameters are not defined properly

Facing an issue while running a private Omics workflow.

Error Message: Missing workflow parameters: BamstatsWorkflow.bam_input, BamstatsWorkflow.mem_gb

The workflow, input and parameter files can be obtained from the link below

Private workflow link: https://github.com/openwdl/learn-wdl/tree/master/3_genomic_tool_pipelines/1_bamstats

Workflow Parameters (in a JSON file):

{ "BamstatsWorkflow.mem_gb": "10",
"BamstatsWorkflow.bam_input": "s3://omics-us-east-1/workflowbamstats/input.bam" }

My queries related to the incident above -

1. I am running this workflow on the console (UI). Does this have to be run on the CLI instead?
2. Do we need to install any dependent tools, before we run this workflow?
3. If we have to install them, how it can it be done and how do we set policies for that?
4. Can you provide a WDL, Nextflow, CWL workflow setup user manual?