Often the bones are mostly mapped by the program already, it's just a few that are missing. You only need to map the ones with "!" mark next to them and the model will work fine.
The 1.4.2 update uses circle icons to indicate the status of the bones. Empty circle means the bone is not mapped but is not critical, meaning the model should work even without that bone being mapped. Circle with dot inside means the bone is already mapped. Circle with exclamation mark means the bone is not mapped and is critical for the model to function.
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https://www.youtube.com/watch?v=jtxQo5NYk2o
New update allows you to fine tune prompt weights with ease and select installed embeddings in the suggestion list while you type.
You can also save generated images as template for future use.
Free and no ads, get it on Google Play https://play.google.com/store/apps/details?id=com.vrstormlab.fluiddiffusion
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https://www.youtube.com/watch?v=bTEOW-Q-DTA