EGM-Understanding

We as owners with enough unit entitlements call for an EGM, is it correct that we cannot set the date and time of the meeting? According to the SM, only he alone can dictate the time and date that is convenient for him to attend, technically.

Can the SM attend the EGM or does he need to be invited? Can we have an EGM without the SM?

If the SM rewrite our agenda and motions, can he send it out without letting us approve the amended agenda and motions?

Thanks