From the main menu, select "Onboarding" then "Content Manager"
At the top of the screen click the "Create New Merge Document" button
Pay rate fields are typically used in contracts and will therefore appear under the "Onboarding" tab. Keep in mind that this type of field could also appear elsewhere depending on your account configuration.
Search for your field and click the
icon to the right of the field to edit it
You should then see a table like the below containing rows of rates. Click on the 3 dots to the right of the row containing the rates you wish to edit.
Then select "Advanced" from the menu
Update the rates as required then hit "Save"
When you've updated all the desired entries scroll to the bottom of the table and click "save"