Ques; i want to know about the kosor salat.plz i need the answer of following points
1.when any mosque is around ,,how i will perform kosor becoz in mosque there will be a jamat,,will i join jamat or perform salat indivisualy...

2.when i will go somewhere for temporarily,,,after journey if i stay there but found stable ,,,will i perform kosor or i can say my regular prayer...

matter very urgent...for me.