* the fact of agreeing with and accepting something that someone suggests
* support for an idea or plan
https://dictionary.cambridge.org/dictionary/english/buy-in

Take an “owner” mindset. Employees who think like owners are constantly scanning the environment for opportunities to make an impact. If you’re not currently thinking this way, now is the time. Instead of saying “that’s not my job,” develop a career-focused mindset and imagine what you could do to make the business grow. Maybe you’d spend more time learning about the customers, for example. While you want to have your manager’s buy in so you don’t unknowingly step on toes, this mindset will ensure you always see opportunities to get noticed.

https://www.forbes.com/sites/dawngraham/2020/03/26/5-strateg...

English term (edited): buy-in

https://en.wikipedia.org/wiki/Management_buy-in

"Definitions of buy-in
1 a purchase of shares by a broker after a seller has failed to deliver similar shares, the original seller being charged any difference in cost.
2 a purchase of shares in a company by managers who are not employed by it.
3 the buying back by a company of its own shares.
4 agreement to support a decision.
the CEO got a buy-in from all his vice presidents to launch the new product." (Oxford Languages Dictionary)

While you want to have your manager's buy-in so you don't unknowingly step on toes, this mindset will ensure you always see opportunities to get noticed.