Grafana lets you create dynamic dashboards using _template variables_. All variables in your queries expand to the current value of the variable before the query is sent to the database. Variables let you reuse a single dashboard for all your services.
By choosing `vertical` the panels will be arranged from top to bottom in a column. The width of the repeated panels will be the same as of the first panel (the original template) being repeated.
Only make changes to the first panel (the original template). To have the changes take effect on all panels you need to trigger a dynamic dashboard re-build.
You can do this by either changing the variable value (that is the basis for the repeat) or reload the dashboard.
> **Note:** Repeating panels require variables to have one or more items selected; you cannot repeat a panel zero times to hide it.