when- clause

This is the first time I've ever asked a question of an English teacher.
I'm a little nervous.

I thank you for your explanations in advace.



1. Please compare two sentences below.

==========================
Tell me when you will finish your job.
Tell me when you have finshed your job.
==========================

Is there any difference between their meanings?

Or, is there any grammatical erorr?


2. And these two sentence.
===========================
Tell me when you will have finished your job.
Tell me when you will finish your job.
============================

Is there any difference between their meanings?

Or, is there any grammatical erorr?


3. And these two sentences.
===========================
Tell me when you finish your job.
Tell me when you will finish your job.
============================

Is there any difference between their meanings?

Or, is there any grammatical erorr?


4. And the last sentences.
===========================
A designated waiting area will be assigned to all passport applicants as soon as they have entered the office.

A designated waiting area will be assigned to all passport applicants as soon as they enter the office.
============================

Is there any difference between their meanings?

Or, is there any grammatical erorr?


Thank you for reading.
Have a nice day!

[Tdol]

1. Please compare two sentences below.

==========================
Tell me when you will finish your job.
Tell me when you have finshed your job.
==========================

Is there any difference between their meanings?

Or, is there any grammatical error?

They are both OK. I'd use the second to talk about some work that the person is doing right now, and I need to know when that work is finished to give them more, etc. The first sentence could be referring to a much bigger piece of work,like a short-term contract and I want to know the date when it'll finish.

2. And these two sentence.
===========================
Tell me when you will have finished your job.
Tell me when you will finish your job.
============================

Is there any difference between their meanings? Not a great deal- the first just gives the idea of completion, so could be used to set a time limit, whereas the second would already have a fixed cut-off.

Or, is there any grammatical erorr?


3. And these two sentences.
===========================
Tell me when you finish your job.
Tell me when you will finish your job.
============================

Is there any difference between their meanings?

Or, is there any grammatical erorr? No, but it is 'error'


4. And the last sentences.
===========================
A designated waiting area will be assigned to all passport applicants as soon as they have entered the office.

A designated waiting area will be assigned to all passport applic
ants as soon as they enter the office.
============================

Is there any difference between their meanings? Again, the perfect form gives the idea of completion, but entering is a quick action completed in an instant, so there's not much between the two.

Or, is there any grammatical erorr?