User on Web [Admin/Manager Only]
Login to your Outperform account > Click on Settings(top right drop-down)
Step 1: In the Settings page, click on Custom Fields from the left menu
Step 2: Choose the custom field you want to add more options
Step 3: Click on the pencil button
Step 4: Fill in more values/options that you want to add
Done!
You have added more options for a custom fields.