You can find these settings here:
In the top right corner click on the menu > Venue settings.
Go to 'Scheduling and availability'.
Click on 'Settings' next to 'Planning settings'.
A window will open with the following three settings:
Manage shift types: Here you can manage and edit the different shift types.
Automatically approve open shifts requests: Do you want team members to be able to pick up open shifts without your permission and have them published immediately? Then you can toggle this setting on.
Automatically approve trade requests from team members: This allows you to determine whether your team members' trade requests must be approved first or not. Do you want team members to be able to trade shifts without your permission? Then you can toggle this setting on.