Total time: 2 weeks
What's something you've been wanting to do? A restaurant you've wanted to try? Maybe your friends (old, new, or future) would make it more fun! Maybe it's just hanging out. Maybe it's going for a walk around the neighborhood, maybe it's going for a hike, maybe it's a movie.
You need a date, even if the date ends up changing. Pick something 1-2 weeks in advance. Two weeks increases the odds people will be free, without being forever away.
Next, figure out which of your friends you want to invite. Preferably it's people you think might get along well and enjoy the activity, but it doesn't have to be!
Now you wait for RSVPs. Too few, and invite different people, reschedule, or change the activity. Otherwise, you're good to go :)
You might need to do something to get ready, like make a reservation, download a movie or game, choose a recipe for dinner, or clean up your living space. Now is the time to do that!