Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
While in Toussaint, one day Geralt found a notice posted by an armorer. Since to the witcher a good suit is potentially a matter of life or death, and since he had always benefited from working relationships he had struck up with able plate bangers, our hero debated the issue only briefly before resolving to visit the artisan.