A trigger must be created that changes the Priority field to 1 in the Account record 10 days after an Account record is created.
Note:
Date.AddWeeks returns the date, datetime, or datetimezone result from adding numberOfWeeks weeks to the datetime value dateTime.
CreatedOn gets the value to store in the history table indicating when this entry was created.
Reference:
https://docs.microsoft.com/en-us/powerquery-m/date-addweeks
https://docs.microsoft.com/en-us/dotnet/api/system.data.entity.migrations.model.inserthistoryoperation.createdon
https://docs.microsoft.com/en-us/dotnet/api/system.data.entity.migrations.model.inserthistoryoperation.createdon