A cell may always contain text, icons, color and annotations this will not be affected by the configured editor.
How to change the editor of a columnIn order to change a single column's editor, double tap on that column and tap onCell editor
Changing the cell's editor on a group of columnsTap on Tools (top bar) / Columns / Select your columns an Edit
Here a short video.
Related articlesThe list of available Editors: input marks, scores, grades and icons
Custom editors: Icons