I need a formula for the drive spreadsheet to return the date of the first day of the month and the day from the start of the week.
For example, every month one should be 01-07-2018 then 01-08-2018
The other should change every week 01-07-2018 to 08-07-2018 to 15-07-2018
Solved by O. D. in 21 mins