I would like to know what are the characteristics of a host to have the sdk and that 70 people can access without having problems
Welcome to the community!
In order to host a meeting, you only need a free Zoom account. However, you are limited to 40 minutes of call time. To increase this you’ll need at least a Pro account. All Zoom plans allow at least 100 participants.
Documentation on how to set up the Web SDK can be found at the link below. Be sure to come back if you have any questions!
Thanks for guiding them, Alex.