After you choose a template you will be able to customize it in the editor.
Start by adding the pages you need of the chosen template. This article explains thoroughly about how to manage the pages of your genially.
Once you have the pages you want to customize you will be able to edit some basics such as:
- Insert and edit text box
- Insert elements and images
- Create image effects with clipping masks and frames
In the Editing basics sections you will find more tips and tutorials to guide you through the creative process.