qmathe

[iron steeple]

The only way to do this is through the API, right?
Yes

In the dashboard, I see that the schedule is Automatic (daily). If I change it in the dashboard, is it going to reset the payout schedule for every connected account or not?
That will likely be your platform's payout settings, unrelated to the connected accounts

There's no global payout schedule for all connected accounts. You'd set it per account as you are now