Lead-IT websites are based on DNN (DotNetNuke) CMS system, which lets you manage your pages content without web design knowledge, in addition Lead-IT provides you powerful modules to let you manage your content in easy and efficient way.
One of the important modules that are provided free and out of the box is the Gallery Module which lets you organize and display your visual rich content (Photos & Youtube Videos and Audios), so your visitors will be able to see your activities photos or portfolios or even a product description Youtube Video.
To add and use Galleries, please follow the following steps:
1- Open your page for editing if you don't know how to edit your page, please view this article
1- Add a Gallery Module to your page (select EasyDNNGallery) :

2- When you hover on the pen icon you will see two first options
a- Manage Content: Manage, upload or delete your pictures, Youtube, etc
b- Gallery Settings: Select the way your Gallery would be displayed (i.e Sliders, Portfolio, Categorized ...etc)

3- Open Manage Content to start uploading your content, Content are added into Galleries and Galleries are added into Categories, so you first need to add Category
4- Add new Category Enter Category name and click on Plus Icon

5- Add Galleries into the new category , Open the Category

6- Enter new Gallery Name and Description if required

7- Open the new added gallery to add content to it , click open

8- Start uploading your content as follow

After organizing your content , select the way you want to display the gallery
9- Open Gallery Settings

10- Select the way you want to display your content, select the suitable type, example use Gravity for categorized content with social share and comments or portfolio if you want to display portfolio images ,or sliders

Click save and check how your gallery looks like
For questions please comment on this article