To use Custom Fields in Time Tracker, enable and configure it on the Plugins page. After you mark the Custom fields checkbox and click Save, the Configure link appears. Configure link for custom fields
Click on the Configure link on the Plugins page. If you have not yet created any custom fields, an empty list appears like on the screenshot below.
Click the Add button to add a new custom field
Click on the Add button to add a new field.
Configuring a Text Custom Field
Provide a name, select entity type, and select text for the type of the field. If the field is required tick the Required checkbox. Click the Add button to finish the operation.
Adding a text custom field for SR&ED time tracking
Configuring a Dropdown Custom Field
Provide a name, select entity type, and select dropdown for the type of the field. If the field is required on time entries tick the Required checkbox.
Adding a dropdown custom field for location time tracking
When you click the Add button to finish the operation, the new custom field appears in the list. Click the Configure link to add dropdown options.