Use REGEX to select date

This workflow looks for a Close Date value using REGEX in the IF node. If it finds the correct value, it will pass that value on. If it does not find the correct value, it will generate a value based on the present time plus three weeks. The final result will show up in the NoOps node. You can text this execution by enabling and disabling the Set node when you run the execution.

Help me set up the n8n workflow "Use REGEX to select date" (https://n8n.io/workflows/1328). It uses: . Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.