Dates related difficulties at the order level

Hi Gurus,

I will appreciate the help in these question :

Q1 - Can you explain to me how can i change the scheduled start and the sched. Fin in the maintenance order Dates tab ?

Q2 - in the PP-PM integration, what is the value on which the system is based? (is it the scheduled or the basic one).

Q3 - We want to monitor the time of the orders (is it a good practice to use the schedType Forwards with time)

Q4 - What is the use of the adjust dates key

Adjust basic dates, adjust dep. reqmts to operation date 1 Adjust basic dates, adjust dep. reqmts to order start 2 Do not adjust basic dates, dep. reqmts to operation dates 3 Do not adjust basic dates, dep.reqmts to order start

Thanks,

Karim Es.