What do you mean by arranging dates? Like asking a girl who is your friend to pair you up with another girl for a date? It doesn't make sense to mean how that would take 2-5 years to do if you are meeting lots of new people in your city/campus.
When a social circle arranges dates for you, it is either a male friend/acquintance or a female friend/acquaintance offering to set you up with someone or set up some event in which you two will be introduced. Also, it could be you going to a friend/acquaintance and asking for a setup/introduction.
Getting these introductions from the social circle are not easy. There are 3 basic factors affecting this.
1. You have to have a lot of friends. Not many friends will be able to facilitate introductions
2. Next, the friends have to know you well. It's rare to receive introductions from people you don't know well.
3. These friends need to know single women who would be open to this introduction.
If you social circle is incapable of introductions right now, it would take 2-5 years in a lot of instances to get those introductions. You'd have to make many new friends and some of these friends would have to have deep social circles. Factor #2 also takes time.
@CollegeMan22 - You're lucky you're under 30. Trying to develop a social circle at age 30+ with people close to your own age in a city where you didn't grow up is a very difficult endeavor. People in the situation described in the last sentence are usually either app swipers or in-person approachers.