My take on the age progression concept, for Illustrious/NoobAI.

Trigger: age progression, multiple views

Use 1girl/1boy (not 2girls or 3girls, otherwise they will differ in appearance). See example gallery (you may want to disable X/XXX in your browsing levels, otherwise some of the images won't be visible to you).
Works best with established characters that Illustrious already knows about, otherwise you must define the features of your character!

Works with any aspect ratio. Landscape ratios tend to produce more views (this is the only reliable control of getting more people, tags won't work so well).

Couples work to a certain degree, but need many (many) tries.

Synergistic tags:

• lineup

• Age tags: aged up, aged down, mature female, mature male, ...

• Compositional tags which encode a similar meaning such as multiple persona, progression, sequential, before and after, age comparison, height difference ...

I have also included new tags such as left-to-right and 3views, 4views etc during training, but they do not seem to have an effect...

For better control over character clothing etc, use Regional Prompter.