Is it possible to edit the supplied camera & make/model categories?

[fisketjon]

I would like to delete categories for cameras that have been used by other than my family, so that those pictures end up in an other "bag".

Also, is there any point in having both of these categories?

[Mario]

IMatch by default include a data-driven category that groups images by the camera brand and model ("Make and Model") and one category based on the photools.com::IMatch\1510\cameraname tag IMatch tries to fill with a unified camera name.

You are free to change or even delete any of these categories if you don't need them of course.

I have no idea what marks a camera brand or model as "used by other than my family". 

But you can try using the Filter Pattern in the data-driven category to include only makes and models used by your family.

Another approach would be to put all non-family photos into a category, and then use that category as a filter for the Make/Model or Camera Name category.