Using the file editor of filemanager found in cPanel is an easy way to edit files from who is not comfortable in using command line (SSH access), its self-explanatory process however, some files including .htaccess is hidden by default, here is how to make it visible so you can edit it.
To make the .htaccess file visible and all other files start with a dot:
1. Access cPanel from your admin area, launch the filemanager
2. In Settings, enable "Show hidden files (dotfiles)" option, Save
3. You are ready now, double-click into /public_html folder and .htaccess will be visible and ready to edit