How to use welcome in?

Excuse me, could you please clarify what you mean by "How to use welcome in?"? It seems like a phrase that might have been misinterpreted or typed incorrectly. Are you perhaps asking about how to incorporate the word "welcome" into a sentence or conversation? Or are you asking about how to use a particular cryptocurrency exchange or platform that includes the word "welcome" in its name or branding? If it's the former, a simple sentence using "welcome" might be, "Welcome to our company, we're glad you're here!" For the latter, I would need more context to provide a specific answer.