First you need to add Troglio as a custom power-up.
For this, you need to go to your power-up's admin interface to add a new Power-Up. If you didn't created a team yet, you can create one now (Power-Ups need a team). Once you selected your team, just click on "Create a new Power-Up", fill the form like this:
Power-Up name: Troglio
Author name: troglio
Email: team@troglio.com
Overview: Turn Trello into a CMS
Description: # Power your apps and websites from Trello
Category 1: Marketing & Social Media
Category 2: Developers Tools
Power-Up capabilities: authorization-status, board-buttons, callback, card-buttons, show-authorization, show-settings
Power-Up icon URL: https://powerup.troglio.com/troglio-logo.png
iFrame connector URL: https://powerup.troglio.com/index.html
Link to your privacy policy: https://troglio.com/privacy
Support team email: support@troglio.com
Once you have added the Power-Up, you are good to go !! Just go to any board in the selected team and add your custom Power-Up named Troglio:
Enable the Troglio
power-up in a Trello board