Remember: The verbs of the second group end in “ir” and their present participle end in “issant”.
For example: finir, choisir, applaudir, pétrir, etc....
Note that verbs like partir, accueillir, venir, courir, etc.. , even though they end in “ir”, do not belong to the verbs of the second group because their present participle does not end in “issant”.
The future simple of the verbs of the second group is formed by adding : ai- as - a - ons - ez - ont to the infinitive.