Here is my TRANSLATION (read this first, don't use Google translator) with my COMMENTS (in red color) on the steps of filling your interview booking form (Step 1 of the MCC call):

Next, check your email. You are expected to receive this message:

Dear candidate for the Master's program in Computer Science.

As part of the admission process, tomorrow, July 8, your academic interview will be held; for this, please:

1. Confirm your attendance by replying to this email.

2. Enter the zoom link below, tomorrow at 10:00 am.

3. Stay connected until you are admitted to the room.

4. In case of any doubt, contact (see below).

https://zoom.us/j/XXXXXXXX?pwd=XXXXXXXXXXXXXXX

Meeting ID: 994 9229 5743
Password: 136152

Excellent afternoon

Carlos A. Carbajal Ramírez
CIC - DIIC
ccarbajal@cic.ipn.mx
mobile: 5548282856

Please reply to this message and say you confirm the appointment.

Then, connect to the Zoom meeting inicated in the message you received, near that time (better earlier) and wait for them to let you in.