Help with diagrams

[xtra]

Hello, i’m newbie in uml
i need draw 4 diagrams:
1.Use Case diagram
2.Class Diagram
3.Sequence Diagram
4.Component Diagram

@task

Time tracking and calculation of wages in the firm franchisee 1C.
Firm conclude contracts for supporting systems based on 1C: Enterprise, as also develop its own configuration.
On every project are assigned manager and the developer.
Must keep records of working time each of them to determine the earnings at the end of the month.
The hourly rate is determined according to each professional position, various allowances and interest of the work.

can somebody help with this??? :!: :!: :!: