How to add slot in an opportunity ?

First of all, if you need to add a slot in an opportunity you have to be assigned to it so you can have access to the add/edit privilege.

1. On the left side of the home page, hover on the opportunities icon and click on the 2nd one "opportunities I manage".
2. Choose the opportunity by clicking on the id and make sure that the opportunity is not live.
3. Click on "slots" in the side navigation.
4. Press on "+ Create".
5. Choose your slot details and press "submit".