Currently, we do not support secondary user device testing on smart home skills, so only the account owner will see the In Development smart home skill in the Alexa App. If you are not the account owner and you would like to test the skill on devices, a workaround is to start a beta test and invite yourself and others. Please visit this page for additional information:
https://developer.amazon.com/docs/custom-skills/skills-beta-testing-for-alexa-skills.html
