Hi @aepaa --
I typically would ask the person requesting the report for their date range preference for what the report covers OR if they are not sure, I would look at the data I am analyzing and provide a recommended date range. Because daily and monthly are different date views or breakdown and they did not ask for quarterly but last 90 days, it seems like they might be looking for the last 90 days. (I would double-check.) If they are, make sure you are using the Last Full 90 Days option.
As to how to present the daily and monthly views of the data:
To show daily trends of the data, I would drop Day as the rows and the metric as a column. It sounds like you have multiple metrics, so you would have to think about what you're trying to say about those metrics.
If you want to compare trends between UV and visits, I would use UV and visits as different columns and turn that freeform table into a line visualization.
If you want to showcase how a specific metric trends over time, I would keep that table to one metric and right-click to add time-period columns. You can add a column for the 90 days prior to your current date range and/or the same 90 days last year. It really depends on the change from these two time periods to your current data. You will have to update these columns if you change the date range to your panel. There are options to create custom rolling date ranges, but that depends on how often you want to run this report. I would not leave the data as a freeform table, however. It would be easier for you and your stakeholders to digest the data using a line visualization.
For the monthly view, it is the same approach as daily. What are you trying to communicate to your stakeholders? Is it a particular metric over time, or a comparison of both over time? Because you have less rows (if you are using the last 90 days), using a bar graph might be less clunky (I also prefer it to differentiate from the daily view).
I think I covered all of your questions. Happy to help if you have any follow-ups.