The T-score can be set for manual entries, as well as overridden in existing rides that have already have a calculated T-Score value.
- To enter an activity manually, go to the Calendar and click the plus icon
and select "Record manual activity" and fill out as many details as you can regarding the ride, including an estimated T-Score. - To edit an existing activity, go to the summary page and click on the menu button
and then the edit button 
to update the T-Score field, then click Save.
Note: If your T-Score is incorrect due to an incorrect FTP/Threshold power setting or a bad data point, please see our other topics on how to reprocess an activity and how to edit bad data points.