Template Dashboard w Form Filter

Hi all,
I am attempting to use this dashboard template, Note this includes the dummy data that comes with the template and I will be replacing it with my own info. There appear to be four primary sheets, noted below.
Intake Sheet
Region Sheet - this is where helper columns are. It looks like the region info feeds into the summary and metrics sheet but I am unclear how. Does the intake form feed IN to the region sheet or how is that data collected/setup there? Also, in this dummy data there are only 99 entries on the region (a mix of the same 4 region types) but more than 200 entries on the intake sheet - why the difference? Lastly, the last row of the region sheet has a red flag in the helper column - can you help me understand why? For the sample data they use 4 regions - with my real data I would list 7 departments
Portfolio Summary - appears to be the a duplicate of data from the intake sheet but only with key columns that are tied to metrics reported in the dashboard
Dynamic Metrics Sheet - this is where the data is for any filtered group that is then pulled into the dashboard.
I am confused on how to use the Region Sheet that has the helper columns
Lastly, please note that there is a form tied to the intake sheet and also a form on the dashboard so it can filter data.
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