How to use welcome?

Could you elaborate on the context in which you're asking about using the word "welcome"? In general, "welcome" is used to express pleasure or hospitality in greeting someone, as well as to indicate that someone is accepted or approved of in a particular situation. For example, when someone new joins a group or event, they might be greeted with "You're welcome to join us!" or "Welcome to the team!" In customer service settings, employees might say "Welcome to our store" or "Welcome back" to returning customers. Additionally, "welcome" can be used as a response to expressions of thanks, such as "You're welcome" or "Welcome anytime." Can you provide more specific details about the situation in which you're wondering how to use "welcome"?