Office 365 - expand distribution list?

[Novalee]

I know this can be done in Outlook, but does anyone know how to (or if you can) expand a distribution list on Office 365 web? Someone needs to remove one person before emailing something out.

 

Thanks.

[xenonive]

I would be interested if this can be done as I haven't found a way to do it ad hoc before sending.