@mrp777, thanks for reaching out and great questions! I’ll do my best to answer them below:
Yes, the seasonal adjustment will change all zone durations within the watering schedule.
Nope, you can use it without Water Budgeting. Water Budgeting will automatically adjust the seasonal adjustment on a weekly basis if it’s enabled.
Nope. Your base durations equal 0% on the seasonal adjustment. These can be set to any season you want them to be.
Not currently, since Water Budgeting automates this adjustment. I don’t believe the weather triggers would give you weekly data points to pull from…