1.Can I talk to you for a minute Jim?

  I'd ..like to talk to you for a minute Jim.

2.Can children go into the Fitness Centre alone?

 Are...children allowed/permitted to go into the Fitness Centre alone? 

3. You don't need  a passport to travel to Scotland.

 A..passport is not necessary/needed to travel to Scotland. 

4.I'll help you with that suitcase.

  Let...me help you with that suitcase 

5.It is essential to wear protective clothing in the lab.

 You must/have to wear protective clothing in the lab. 

6. You are advised to take this medicine after meals.

 You should take this medicine after meals. 

7. Children must go to school until they are sixteen.

 Children have.to go to school until they are sixteen. 

8. Tickets must be confirmed 24 hours before the flight.

 You must/have to confirm your tickets 24 hours before the flight. 

9. You should read the details of the contract carefully

 You ought to read the details of the contract very carefully.

10. It is possible that I will see you later.

  I might see you later.