We use default slider for all our city pages. If this setup didn't work for you, please make use of the slide groups option.
Follow these steps:
1. Go to Dashboard >> Slides >> Slide groups
2. Create a new slide group
3. Clone the existing slides if you want to use the same content. Else, add a new one
4. For cloning, just go to Slides >> All Slides and hover over the slide name of the slide you want to clone. Click Clone to duplicate it.
5. For creating a new slide, go to Slides >> Add New Slide and enter the slide name and the content.
6. On the right side of the page, you will see 'Slide Groups' option. Select the slide group name before publishing.