You can't change an existing project template right away, although there are two methods to edit your template. 

1. Edit the project a template is based on 

Edit the original project your template was based on to change the template accordingly. 

  1. Select the main project you based your project template on
  2. Make the changes you want 
  3. The changes will now be visible in the project template

Don't know the name of the original project? Just use the second method and create a new project template. 

2. Create a new project template

If you don't remember the name of the original template or you don't want to change the current template, it's a good idea to create a new project template. 

  1. Create a new project and select the template you'd like to changeProject Templates: create new
  2. After the project is created, you can make the changes you want.
  3. Navigate to your project.
  4. Click on the arrow next to the project number
  5. Choose Save as template

Want to delete the first template? Navigate to Settings > Projects > Project templates. Click the small bin below "Actions" to delete the project.