Historical clue formulations

• Sellers of airtime, informally — 2021-11-18
• Ones with spots to fill — 2021-04-01
• Ones selling commercial time, informally — 2019-05-06
• Media sales team, informally — 2019-01-22
• Promo team — 2013-04-19
• TV network force — 2011-02-20