You first want to add the gadget to one of your dashboards. Add the gadget like any other one by:
1- Click Edit on the dashboard.
2- Locate the Dashboard Links gadget on the list to the right.
3- Click Add.
2. Enter the links you want on the dashboard
While in the edit mode of the dashboard, go to the configure gadget screen by clicking on the 3 dots. Enter the links by adding the link title and its address separated by a comma. Each link should be separated by the next using a comma. Links will appear in the same order you enterd the text.