Grain - randomize structure - is it possible?

I often use adding film grain to photos. However, I have a problem because by selecting a specific grain, then its amount and structure, and then synchronizing these settings for subsequent photos, the grain looks completely identical, which is very frustrating, especially when showing photos in slide shows or presentations. Is there any possibility for the noise to have the same amount and granularity at given values, but a different structure so that it is not identical? Or is there any quick method of slightly changing the values so that the noise is slightly different in a series of photos?