From publisher blurb:
A little something extra for your PF2 game!
Convergence Feats are a special variety of feats designed for characters using multiclass archetypes, enabling them to better utilize abilities from both of their classes. A character can take a convergence feat in place of a class feat if they have taken at least one archetype feat. Most convergence feats require a specific class feature or set of class features to function.
The new Pathfinder Second Edition has a ton of customizable options, and the Just a Second line gives you about a page of new rules content to incorporate into your campaign. A set of feats, linked spells, clever magic items, and so on. No fuss, no muss, just new ideas and mechanics for GMs and players alike!