1. Add a new dashboard component by clicking + Component, or edit an existing one by clicking the pencil icon () on the component.
2. From the Add Component or Edit Component menu, in Custom Link, enter a link destination.ImportantDepending on whether you link to a destination in Salesforce or to another website, the destination you enter in Custom Link must follow certain conventions. Unless you append https:// or http:// or www., the destination you enter gets pasted to the end of your Salesforce org’s domain (for example, https://na1.salesforce.com/). If you enter abc, then your component links to https://na1.salesforce.com/abc. Appending https:// or http:// or www. lets Salesforce recognize that you intend to link to a specific website.This means that linking to heroku.com won’t take you to the Heroku website. Instead, it’ll navigate you to https://na1.salesforce.com/heroku.com. To navigate to the Heroku website, enter https://www.heroku.com/.Example: Link Somewhere Inside SalesforceTo link to the Opportunities tab, enter /lightning/o/Opportunity/list.Example: Link to Another WebsiteTo link to Heroku dot com, as described in the prior note, enter https://www.heroku.com/.
3. If adding a new component, click Add. Or, if editing an existing component, click Update.
4. Click Save.