1. From Setup, enter Web-to-Case in the Quick Find box, then select Web-to-Case.
2. Select Enable Web-to-Case.
3. To ensure that guest users can log cases through contact support, from Setup, enter Communities in the Quick Find box, then select All Communities.
4. Select Builder next to the community you want your guest users to log cases via contact support.
5. Click the drop-down arrow next to your community name and selectCommunity Management.
6. On the left-hand panel, click Administration.
7. Click Pages.
8. Click Go to Force.com.
9. On the Sites Detail page, click Edit.
10. Enable Guest Access to the Support API.
11. Add NewCase, or a custom quick action to add cases, to the Selected Quick Actions.
12. Click Save.Note When using a self-service template, it’s unnecessary to set up the otheroptions on the Web-to-Case Settings page.