Jury Summons – any idea how soon it is assigned after you call in/log in to sign up?

Last time I had jury duty was a couple of years ago, looks like with covid their doing it way differently. Summons just says to call or log in within 7 days of receiving the summons. What I am wondering is how far out the date for the duty is set once you call/log in, anyone have experience with this? Harris County btw.