Of course, the order of drinking is to respect the leader first, and then to respect the three old employees. According to the position, the length of time in the company, the degree of young and old, it is ok to propose a toast in turn.
Toast, the leader's words: it is an honor to share food and drink with the leader, and do it yourself first; Old employee's words: I'm glad to be a colleague and friend with you. We are all experienced people in the industry. I hope to take care of the younger generation.