Meaning: if; in the case; in the event of
Formation:
Verb-casual, past + 場合
Noun + の場合
なadj + 場合
baai wa is used when you want to indicate possibility of some outcome, a hypothetical situation that will happen, In the case that he comes lets book the table….ect
時間に遅れった場合は、会場に入れません
jikan ni okureta baai wa, kaijō ni hairemasen．
If you are late, you will not be admitted to the hall.
会議に間に合わない場合、連絡してください
kaigi ni mani awanai baai wa, renraku shite kudasai
If you cannot be in time for the meeting, please inform us.