1) Thumbnails Navigation: Use the option to Show/Hide the thumbnail navigation on the gallery slider. 

2) Thumbnails Navigation Visibility: Select any of the options from the dropdown for thumbnail navigation visibility from here. Options are:

• Always (Select the option for showing the navigation always)
• On Hover (Select the option for showing the navigation only on hover)

3) Thumbnails Navigation Style: Select any thumbnail navigation styles you want from the three different styles. Options are:

• Outer
• Inner
• Custom

4) Thumbnail Navigation Icon: Choose a thumbnail navigation icon style from here. More than 10 different icon styles are available.

5) Thumbnail Navigation Icon Size: Set the thumbnail navigation icon size from here as needed. 

6) Thumbnail Navigation Color: Set the thumbnail navigation color, icon hover color, background, and hover background color from here as you wish. 

7) Thumbnails Navigation Border: Set a thumbnail navigation border width, normal color, hover color, and border-radius from here.

8) Thumbnails Navigation Box Size: Set the Height and Width values as you want in (pixels) or (%) or (em).