The first and most important step to do before you can dive deep into how to use the app is actually adding the bot to your Discord Server(s). This will cover the different ways to invite the bot and which permissions it requires.
If you changed ComBot's permissions or maybe it randomly stops working, you can reinvite the bot and Discord will reset its permissions.
Using the invite link
To invite the bot with ADMINISTRATOR permissions you can use this link. This will give ComBot access to your entire server with almost no restrictions. This is not preferred by most servers as the Administrator permission is often viewed as a security flaw to give to bots or users in general.
To invite the bot with RECOMMENDED PERMISSIONS you can use this link.
If you already see the bot within Discord, you can invite it using its profile invite link. This will invite the bot with RECOMMENDED PERMISSIONS.