Questions & Answers about Менеджер ставит подпись и печать на договор.
The imperfective ставит describes a general or ongoing action (he is in the process of putting his signature and seal). If you wanted to say he has completed the action, you’d use the perfective поставил:
Менеджер поставил подпись и печать на договор.
Both mean “to sign a contract,” but with a slight nuance:
• подписать договор is the standard verb “to sign.”
• ставить подпись на договор literally emphasizes the act of placing the signature—often used when talking about the formal step of adding or stamping. In practice they’re interchangeable in a business context.