Hello! I have the following questions:

1) If I want to ensure that sales reps apply a discount for all opportunities from the same account, how would I achieve that? I'm thinking if I add a custom field to the standard price book with a formula that takes a % off, that would do the trick, but is this the right approach?

2) Why would two different values from picklists each throw a different error message? 

3) What is "default text" in the context of a standard object? I'm looking at the "Account" object. I've heard this term a few times but have not been able to find it. I see there's a "help settings" for the object itself and "help text" for the actual field. 

4) For IP access settings, if a user is within the org-wide trusted range but NOT within the range defined for their profile, are they not able to login or do they get the email with the verification code? 

5) If there's a restructure in a sales team and the sales manger isn't able to see the typical opportunity data they are used to seeing, what could be the reason?

Thank you for the help!