A: Yes. To add score, open the company card or contact card and open the create menu: Create on the company card, Add on the contact card. Choose Create marketing event (on the contact card, Marketing event), enter the Marketing score and a Description, and click Save.
To reset a company's score, open the company card, open the same menu and choose Reset score. The option is shown when the company has a score. In the dialog, tick Block any future score for this company if the company should not collect score again, then click Reset.