Welcome to the Community, wcavanagh,
I can help share information in running your first payroll.
Currently, the payment method available when paying employees is via Paper Cheque. Therefore, the option to enter employees bank details is unavailable.
For future reference, I recommend checking out our Community Help articles: https://quickbooks.intuit.com/community/Employees-and-Payroll/bd-p/uk-employees-and-payroll?label=Qu....
Here you can locate multiple resources to assist with every step of the process.
Should you have questions in running payroll, please feel free to reach back out by leaving a comment below. Wishing you continued success.