The Serie A club will host RB Leipzig on Thursday (20:00 BST) after qualifying for the continental competition for the first time in their 119-year history.
Como officials are making way for elderly fans by giving up their seats, with president Suwarso announcing on Instagram that he and other club executives plan to surrender their seats for older fans. "We want those seats to be allocated to supporters who have waited the longest - fans born in 1950 or earlier, who have followed Como through every division and every era," Suwarso wrote.
The club's home venue of Stadio Giuseppe Sinigaglia on the shores of Lake Como has a capacity of about 12,000, but that number was reduced further by 1,000 because of Uefa's broadcasting and operational requirements.