Workbook Upgrade to have a starting date & end date for events

Hello Wizards,

I have a calendar which works well (c-f with 3 events/day) but if an event should last 2 weeks for example, I would need to add 10 rows in my data table (one for each day). I would like to upgrade it to have a starting date & end date, avoiding manual work. Attaching the workbook for your reference
Also, is there any approach / formulas that could make the same events from the same data table to populate the 3rd sheet, this time based on "Process" column, but at a monthly level? Keeping only the description & period would be enough

Thank you!