Explanation
Graphical user interface, text Description automatically generated with medium confidence

Step 1: Create a manifest for the skill bot
You can use skills to extend another bot. A skill is a bot that can perform a set of tasks for another bot.
A skill's interface is described by a manifest.
Step 2: Register the skill bot in Power Virtual Agents
Power Virtual Agents enables you to extend your bot using Microsoft Bot Framework skills.
First, create a Power Virtual Agents bot and create and deploy the skill using pro-code tools into your organization.
Next, register a skill in Power Virtual Agents.
Step 3: Register the homework bot in Power Virtual Agents
You can use your Power Virtual Agents bot as a skill with Bot Framework bots.
The Bot Framework and Power Virtual Agents bots must be deployed in the same tenant.
Reference:
https://docs.microsoft.com/en-us/azure/bot-service/skill-implement-skill
https://docs.microsoft.com/en-us/azure/bot-service/skill-implement-skill
https://docs.microsoft.com/en-us/azure/bot-service/skills-write-manifest