My Apps area missing from Dynamics 365 navigation (SiteMap)

You can add the "My Apps" option under Settings by editing the sitemap within the sitemap designer:

1. Access your Dynamics 365 organization as a user with the System Administrator or System Customer role.

2. Navigate to Settings, Customization, and then click Customize the System.

3. Click Client Extensions, click Sitemap, and then click Edit. 

4. Click the Settings area. 

5. Click the Application group if it is available. If the Application group is missing, you can choose to create it or add this subarea to another existing group.

6. Click + Add and then click Subarea.

7. Click the Type dropdown and select URL.

8. Copy and paste the following value into the URL field:

   /tools/AppModuleContainer/applandingtilepage.aspx
9. In the Title field, type My Apps.
10. For the Icon option, select the following option if it is available or select the default icon or any other icon: AppModule_Default_Icon.png.
11. Use the following value for the ID value:  nav_app_modules
12. Click Save and then click Publish.
13. Close the sitemap designer 
14. Within the Solution dialog, click Publish All Customizations.
15. Logout and log back into the organization  

To directly access the My Apps page, append the following text to your Dynamics 365 URL:

/apps

For example:

https://contoso.crm.dynamics.com/apps