I am new to odoo, and i would like to implement it in our company. I have some questions for using the platform:

1. We would like different users, with each their own e-mailaddress. eg: carl@sc.be, bert@sc.be ... and we would like to communicate and login inside odoo with these identities.
   For all outgoing communication to our clients like quotations and invoices we would like to use another address, like sales@ourcompany.com - how can i configure this?

2. Is it possible to make quotations and invoices from tasks? the task followup is perfect for our way of working (after some customisation) but somewere on the way we would like to put a price on a task and send a quotation. If the quotation is paid, we would like to move the task on and send an invoice. .

Clearing these things out would make a huge difference allready. - Thanks in advance