> For the complete documentation index, see [llms.txt](https://help.calcumate.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.calcumate.co/calculator-setup-and-customization/step-1-initial-set-up/call-to-action-url.md).

# Call to action URL

The call to action URL can be set:

* As a default for all URLs on the calculator
* Per storage unit type

To change the default call to action URL for the calculator, [login](https://help.calcumate.co/calculator-setup-and-customization/step-1-initial-set-up/www.calcumate.co/login), select the calculator you would like to edit, and update the "Call to action URL field":

<figure><img src="https://2142607565-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTTkW3ulcBeT90bhskPiJ%2Fuploads%2FgBg4rOtlYOfd3FbuoSm7%2FScreenshot%202024-03-20%20at%2014.07.50.png?alt=media&amp;token=65c9106a-c843-4430-aef1-bda593c2f620" alt=""><figcaption></figcaption></figure>

To change the call to action URL for individual storage unit types, [login](https://help.calcumate.co/calculator-setup-and-customization/step-1-initial-set-up/www.calcumate.co/login), click into the individual storage unit, and edit the "URL to reserve" field:

<figure><img src="https://2142607565-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTTkW3ulcBeT90bhskPiJ%2Fuploads%2FEiFMh6YeEYMAfAKUCZef%2FScreenshot%202024-03-20%20at%2014.08.44.png?alt=media&amp;token=da2d544a-747c-41fe-be39-29afe2249496" alt=""><figcaption></figcaption></figure>