convene
v.v. to bring a group of people together for a formal meeting. You use this when a leader or an organization calls for a gathering to discuss something important.
v. to summon or cause to assemble for a formal meeting or session. Typically transitive when an authority figure calls the meeting, though it can be used intransitively to describe the group gathering.
The committee will convene next week to discuss the budget.
The board of directors decided to convene an emergency session to address the sudden drop in stock prices.
Under the terms of the treaty, the council must convene annually to review progress on environmental targets and propose new legislative frameworks.
Borrowed from Middle French convenir, from Latin convenio, convenire (“come together”), from con- (“with, together”) + veniō (“come”), ultimately from Proto-Indo-European gʷm̥yéti, from the root gʷem-.
The verb is often transitive ('convene a meeting') but can be intransitive ('the committee convened').
convene togetherconveneThe word 'convene' already includes the idea of coming together, so adding 'together' is redundant.