Start with the people
Ask who is coming, how long they can stay, and whether they want competition, cooperation, or a relaxed hangout. A game that looks exciting to the organizer can be a poor fit for a group that needs short rounds or low-pressure conversation. Pick for the people actually attending.
Set the practical details
Send one invitation with the game, platform, start time and time zone, voice-chat plan, approximate length, and any cost or download. Give people enough notice to install or update. If the group is new, choose a first activity that works even if someone arrives late.
Plan a small backup
Have one alternative that everyone already owns or can join easily. Technical problems happen. Decide in advance how long you will troubleshoot before switching, so one connection issue does not consume the whole night.
Make the first round welcoming
Explain the goal and controls briefly, then play a low-stakes round. Pair a new player with someone willing to answer questions. Avoid piling on advice while they are learning. Invite a quick reset after the round: what was fun, confusing, or too intense?
Close with a useful note
End at the time you promised or ask before extending. Share one specific idea for next time rather than announcing a vague recurring event. If the group enjoyed a particular mode, record it so the next invitation is easier to make.