A multiple-entry Schengen Visa enables the holder to travel in & out of the Schengen Region multiple times.
The Visa Application Charges are non-refundable & will not be refunded in any case.
The requirement of a Spain Visa solely depends on your citizenship status. UK residents are legally free to travel to Schengen zone without a visa.
Since Spain is a part of Schengen Agreement, U.S. citizens are allowed to enter Spain for up to 90 days for tourist or business purposes without a visa. Ensure that your passport is valid for at least three months beyond the duration of your stay.
Spain Schengen Visa approved by Spanish consulate enables the holder to travel across Spain & entire Schengen zone, which are a part of the Schengen Treaty.
A Schengen Visa enables the holder to travel freely across the Schengen Zone, within the validity of the visa.
Upon entering Spain you are free to travel around in Spain & the Schengen Zone. You can enter or exit Spain or any Schengen country as many times as you want, within on the validity of your visa (90 days).
Entering or leaving a Schengen Zone times solely depends on your visa. If you decide to exit a Schengen Zone on a single-entry Visa within the validity of your visa, a multiple entry visa will be required to re-enter the Schengen Zone.
In case you want to work in Spain you need to apply for a Spain Work Visa.
The Schengen Visa is a short term visa that enables the holder to stay in the Schengen Zone for a total duration of 90 days.