Cast
Mr. Lucas
Mrs. Slocombe
Captain Peacock
Mr Grainger
Mr Humphries
Miss Brahms
Mr Rumbold
Mr Harman
Young Mr Grace
Customer (Father,son,woman)(Terry Duggan,Jacquie Cook)
Secretary

Theme
Staff needs to learn each others' jobs.
My new version of what happens right after Mr. Grainger resigns while the entire staff is in the boardroom:

Mr. Rumbold: “He wants to reapply, sir.”

Mr. Grace: “Have we any vacancies?”

Mr. Rumbold: “Young Mr. Lucas’ job is going.”

Mr. Grace: “He’s a bit old for that.”

Mr. Rumbold: “I think we should give him a try, sir. After all, he has had a lot of experience.”

Mr. Grace: “Mr. Theobald’s job is still open, let’s give him that instead.”

Mr. Rumbold: “Mr. Theobald is a board member, sir. Remember, you were about to give me that job awhile back?” (S3E1)

Mr. Grace: “Yes I do. Let’s give him the job.”

Mr. Rumbold: “But Mr. Grace, wouldn’t you rather give the job to a department head, such as myself?”

Mr. Grace: “I’ve made up my mind. Congratulations, Mr. Grainger!”

Mr. Humphries: "Congratulations, Mr. Grainger!"

Mr. Grainger: "For what, resigning?"

Mr. Humphries: "No, you're going to be a board member, he's just said so!"

Mr. Grainger: "Me, a board member? Oh goodness....Mr. Rumbold, may I go and phone Mrs. Grainger and let her know?"

Mr. Rumbold: "Absolutely sir.......in fact, you're now my boss."