Its always recommended and secure to have a secure Password for your WiFi. Its good to have a custom WiFi name. In this post you can know how to change the WiFi Name and the Password with step by step process as well as using the video tutorial.
For some reason you may prefer redirecting incoming calls in your jio sim to be redirected to some other number. In my case, I use JioFi 2 dongle which may not be connected to my phone all the time. As i make calls using the JioFi, people will try to reach me calling back using my Jio number which might be offline. To prevent missing calls we can make use of call forwarding option.
