Answer
To process pays in advance, navigate to future pays using the Next Pay Run button in the Pays screen.
From there, you can edit and save the pay entries as normal for each employee.
If the pays are being processed now but will not be paid until later, ensure the processed date for the pays is set to the date the wages will actually be paid.
If you use the direct entry option to pay wages, ensure the processing date for the direct entry is set to the date the wages will be paid to employees, on the first page of the wizard when creating the direct entry file. Once the file is created, the processed date for each entry is updated.
If you do not use direct entry files, you can edit the processed date for each entry by clicking the Set Processed/Paid Date For Pay Run button at the bottom-right of the Pays screen. This lets you quickly adjust the processing date for all (or selected) employees in the pay run.