To create a link for specific designation(s)/fund(s), go to Giving > Settings > Online Giving. On this page, there is a line titled “Link for specific designation(s)/fund(s):” where you can select the fund(s) you want to be available with this link, and you can even determine a Default Amount and Default Recurring frequency.
As you make your selections, you will notice a link populate below that you can copy to post on your website or in an email. This option is great for when you want to promote giving to a certain cause.