In PowerPack’s Photo Gallery you can easily add your own different custom URLs/ links to the images. Please follow the following steps in order to this:
1. Add custom URL/Link to the images you have added to the Gallery in the Media Manager of WordPress.
2. Modify the settings in PowerPack Photo Gallery
Once you’ve added custom links to the images you’ll need to change settings in the Photo Gallery’s settings.
You can find these settings under General > Click Action. Set Click Action to Custom URL
You can find the complete demo of PowerPack’s Photo Gallery here.