Opening
–☰ MyOffice Mail Menu> Add-ons and Themes > Button .
Items
–Check for Updates: check for updates; if there are updates, the Show Available Updates button appears.
–Install Add-on From File: add an extension from a file on your device.
–Update Add-ons Automatically: enable automatic updating of all extensions.
–Reset All Add-ons to Update Manually: enable manual update mode for all extensions.
–Manage Extension Shortcuts: open hotkey settings if there are extensions with this functionality.