ForeFlight does not support showing multiple categories within the Weight & Balance feature. We considered this, but because some limits can change with category, the user interface became overly complicated. To keep things simple we chose to allow only one category per Weight & Balance profile.
If you want to have a weight and balance profile for multiple categories, we suggest that you make two separate Aircraft W&B Profiles. You could consider naming them with the registration number followed by the Category the profile is set up with (Ex: N12345 Utility). With that setup, when you need to perform a W&B calculation, you simply select the profile for the Category you will be using.
Image 1. Two W&B profiles for each category.
Image 2. Normal Category loading and graph.
Image 3. Aerobatic Category loading and graph.