Hi! I'm considering purchasing Sheetify CRM to manage multiple clients. Could you please clarify:

1. Does it support separate workspaces, or can I create independent CRM copies for each client using separate Google Sheets, without mixing data?
2. Can I connect multiple existing Google Sheets or does each CRM require its own template?
3. Does the dashboard provide monthly or custom date-range analytics, including leads, pipeline stage changes, conversions, and deals won/lost?
4. Can I track historical activity and compare results across periods?

I need to manage clients separately and prepare monthly performance reports. Thank you!