Record working time - some general question

Dear Expert,

I have a general question. Previously my company is using EP 6 with some transaction iview and they have upgrade to EP 7 with ECC 6.

My question is

1) Which webdynpro page should i use if i wanted to let the employees to key in over time.

2) Which webdynpro page should i use if wanted to let the employees to record their attandance.

3) Is there any standard workflow for overtime request and attandance request.

4) Where can i specify the workflow to use as like what i can specify for the leave.

Thanks in advance

Regards

Bryan