Open Share Modal
Click the share icon in the dashboard toolbar, top right of the dashboard detail page.

Choose the embed settings tab

Embed Settings
Use these settings to configure your embed code.
Embeddable
This should be ON if embedding in an app
Allow data downloads
When active the embed will display a download button which will share a CSV download when clicked
Enable pivot tables
When active a Pivot Table view will be accessible to viewers of the embedded dashboard
Filters
Choose which filters to include and with what default setting
Direct Link
This is an embeddable URL for this dashboard and filters. Also learn more about composing a embeddable URL programatically.

Happy embedding to you!