I'm trying to integrate RingCentral API in C# for sending SMS or MMS. So I read documentation according to the documentation I create an APP in the console. APP security type is password base. I send SMS by using username, extension, and password. SMS send successfully. Now I create other users from the admin panel of RingCentral then every user has their phone number and extension so if any user login from my C# web app and tries to send SMS from his number and extension then an error is shown.
I found a solution that says bootstrap your APP set a static password for all extensions.
So how bootstrap APP?